This is a list of the National Register of Historic Places listings in New Haven County, Connecticut. It is intended to be a complete list of the properties and districts on the National Register of Historic Places in New Haven County, Connecticut, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in an online map.^[1]

There are 273 properties and districts listed on the National Register in the county, including 10 National Historic Landmarks. The city of New Haven is the location of 69 of these properties and districts, including 9 National Historic Landmarks; they are listed separately, while the 207 properties and districts in the remaining parts of the county, including one National Historic Landmark (Henry Whitfield House), are listed here. Three sites appear in both lists.

          This National Park Service list is complete through NPS recent listings posted March 8, 2024.^[2]

Current listings

New Haven

Exclusive of New Haven

[3]	Name on the Register[4]	Image	Date listed[5]	Location	City or town	Description
1	George S. Abbott Building		June 14, 1982 (#82004359)	235-247 N. Main St. 41°33′31″N 73°02′20″W / 41.558611°N 73.038889°W / 41.558611; -73.038889 (George S. Abbott Building)	Waterbury	1899 all-masonry construction with unique adaptation to a triangular lot.
2	Academy of Our Lady of Mercy at Lauralton Hall		August 31, 2011 (#11000611)	200 High St. 41°13′23″N 73°03′52″W / 41.223056°N 73.064444°W / 41.223056; -73.064444 (Academy of Our Lady of Mercy at Lauralton Hall)	Milford	The oldest Catholic college-preparatory school for girls in the state.
3	Acadian House	More images	September 5, 1975 (#75001928)	Union St. 41°17′07″N 72°40′47″W / 41.285278°N 72.679722°W / 41.285278; -72.679722 (Acadian House)	Guilford	Served as a refuge for Acadians expelled from Nova Scotia.
4	Aeolian Company Factory Complex	Upload image	January 24, 2023 (#100008602)	85 Tremont St. 41°33′05″N 72°47′12″W / 41.5513°N 72.7868°W / 41.5513; -72.7868 (Aeolian Company Factory Complex)	Meriden
5	Allis-Bushnell House		February 25, 1982 (#82004352)	853 Boston Post Rd. 41°16′45″N 72°35′33″W / 41.279167°N 72.5925°W / 41.279167; -72.5925 (Allis-Bushnell House)	Madison	Built in 1785; now a historic house museum.
6	American Mills Web Shop		March 10, 1983 (#83001276)	114-152 US 1 41°17′44″N 72°57′20″W / 41.295556°N 72.955556°W / 41.295556; -72.955556 (American Mills Web Shop)	West Haven	Early twentieth-century Italianate industrial architecture (1903-1914).
7	William Andrew House		December 27, 2002 (#02001695)	131 Old Tavern Rd. 41°15′55″N 73°00′44″W / 41.265278°N 73.012222°W / 41.265278; -73.012222 (William Andrew House)	Orange	Georgian colonial residence.
8	Moses Andrews House	More images	December 1, 1978 (#78002859)	424 W. Main St. 41°32′23″N 72°49′03″W / 41.539722°N 72.8175°W / 41.539722; -72.8175 (Moses Andrews House)	Meriden	Circa 1760 saltbox house.
9	Ansonia Library		August 23, 1985 (#85001828)	53 South Cliff St. 41°20′43″N 73°04′37″W / 41.345278°N 73.076944°W / 41.345278; -73.076944 (Ansonia Library)	Ansonia	Richardsonian Romanesque building from 1892.
10	George Atwater House		January 17, 1992 (#91001921)	1845 State St. 41°19′57″N 72°54′01″W / 41.3325°N 72.900278°W / 41.3325; -72.900278 (George Atwater House)	Hamden	Well-preserved 1820 vernacular farmhouse.
11	Atwater-Linton House		January 17, 1992 (#91001923)	1804 State St. 41°19′53″N 72°54′01″W / 41.3314°N 72.9003°W / 41.3314; -72.9003 (Atwater-Linton House)	Hamden	Home of William James Linton (1812-1897), English-born artist, engraver, author, and political reformer.
12	George Baldwin House	More images	September 15, 1977 (#77001411)	West of North Branford at 530 Foxon Rd. 41°19′54″N 72°48′17″W / 41.331667°N 72.804722°W / 41.331667; -72.804722 (George Baldwin House)	North Branford	Greek Revival design attributed to Ithiel Town.
13	Timothy Baldwin House		December 1, 1988 (#88002633)	186 Damascus Rd. 41°17′12″N 72°46′56″W / 41.286667°N 72.782222°W / 41.286667; -72.782222 (Timothy Baldwin House)	Branford	Colonial from 1819.
14	Zaccheus Baldwin House		December 1, 1988 (#88002631)	154 Damascus Rd. 41°17′10″N 72°47′09″W / 41.286111°N 72.785833°W / 41.286111; -72.785833 (Zaccheus Baldwin House)	Branford	Late 18th-century Colonial.
15	Bank Street Historic District	More images	July 28, 1983 (#83001277)	207-231 Bank St. 41°33′11″N 73°02′30″W / 41.553056°N 73.041667°W / 41.553056; -73.041667 (Bank Street Historic District)	Waterbury	Isolated group of four late 19th-century brick buildings, including one of only two Queen Anne commercial buildings in Waterbury.
16	John Barker House		August 3, 1974 (#74002051)	898 Clintonville Rd. 41°24′46″N 72°49′29″W / 41.4127°N 72.8246°W / 41.4127; -72.8246 (John Barker House)	Wallingford	Gambrel-roofed brick house from 1756.
17	Samuel Beach House		December 1, 1988 (#88002634)	94 E. Main St. 41°17′13″N 72°48′24″W / 41.286944°N 72.806667°W / 41.286944; -72.806667 (Samuel Beach House)	Branford	Wood-frame house built circa 1790 with a steep side-gable roof, central chimney, and clapboarded exterior.
18	Benedict-Miller House		June 12, 1981 (#81000616)	32 Hillside Ave. 41°33′42″N 73°02′30″W / 41.561667°N 73.041667°W / 41.561667; -73.041667 (Benedict-Miller House)	Waterbury	Queen Anne house from 1879, designed by Palliser, Palliser & Company.
19	Beth El Synagogue		May 11, 1995 (#95000560)	359-375 Cooke St. 41°34′03″N 73°02′27″W / 41.5675°N 73.040833°W / 41.5675; -73.040833 (Beth El Synagogue)	Waterbury	Byzantine Revival building with gold dome built in 1929.
20	Birmingham Green Historic District		April 21, 2000 (#00000325)	Roughly bounded by 5th, Caroline, 4th, and Olivia Sts. 41°19′21″N 73°05′20″W / 41.32242°N 73.089026°W / 41.32242; -73.089026 (Birmingham Green Historic District)	Derby	Town green surrounded by three churches, the Sterling Opera House and other historic structures.
21	Bishop School		November 30, 1982 (#82001003)	178 Bishop St. 41°33′50″N 73°02′12″W / 41.563889°N 73.036667°W / 41.563889; -73.036667 (Bishop School)	Waterbury	Built in 1886, with subsequent expansions, in an eclectic mix of Italianate and Romanesque Revival styles, to serve a growing immigrant population.
22	Blackstone House		December 1, 1988 (#88002639)	37 1st Ave. 41°15′58″N 72°47′11″W / 41.266111°N 72.786389°W / 41.266111; -72.786389 (Blackstone House)	Branford	18th-century timber-frame structure, with a steeply pitched gabled roof, central chimney and clapboarded exterior.
23	Joseph Blakeslee House	More images	April 13, 1998 (#98000362)	1211 Barnes Rd. 41°28′47″N 72°46′03″W / 41.479722°N 72.7675°W / 41.479722; -72.7675 (Joseph Blakeslee House)	Wallingford	Late 18th-century Cape style residence; collapsed and demolished in 2008.[6]
24	Timothy Bradley House		December 1, 1988 (#88002630)	12 Bradley St. 41°16′36″N 72°49′14″W / 41.276667°N 72.820556°W / 41.276667; -72.820556 (Timothy Bradley House)	Branford	Built circa 1730, with a gabled roof, central chimney, and clapboarded exterior; in the Canoe Brook Historic District.
25	Branford Center Historic District		May 6, 1987 (#87000636)	Roughly bounded by U.S. Route 1, the Branford River on the east and the south, and Monroe and Kirkham Sts. 41°16′42″N 72°48′45″W / 41.278333°N 72.8125°W / 41.278333; -72.8125 (Branford Center Historic District)	Branford	Highlights include the neoclassical town hall (1857) and James Blackstone Memorial Library (1893).
26	Branford Electric Railway Historic District	More images	June 3, 1983 (#83001278)	17 River St. to Court St. 41°15′59″N 72°51′21″W / 41.266389°N 72.855833°W / 41.266389; -72.855833 (Branford Electric Railway Historic District)	Branford and East Haven	Trolley line and historic trolley collection.
27	Branford Point Historic District		September 15, 1988 (#88001583)	Roughly along Harbor St. north from Curve St. to Branford Point and also Maple St. east from Reynolds St. to Harbor St. 41°15′57″N 72°49′18″W / 41.265833°N 72.821667°W / 41.265833; -72.821667 (Branford Point Historic District)	Branford	Residences in a range of styles including late Federal, Greek Revival, Italianate, Second Empire, Stick, Queen Anne, Arts and Crafts, Shingle, and Colonial Revival.
28	Bridge No. 1132		September 29, 2004 (#04001091)	CT 80 at the Hammonasset River 41°21′26″N 72°36′45″W / 41.357222°N 72.612553°W / 41.357222; -72.612553 (Bridge No. 1132)	Madison	Open-spandrel concrete arch bridge built in 1934; extends into Killingworth in Middlesex County.
29	Aaron Bronson House		July 29, 1993 (#93000656)	846 Southford Rd. 41°28′17″N 73°10′58″W / 41.4715°N 73.1827°W / 41.4715; -73.1827 (Aaron Bronson House)	Southbury	Well-preserved Cape from about 1785.
30	Josiah Bronson House		February 25, 1982 (#82004356)	Breakneck Hill Rd. 41°32′51″N 73°07′29″W / 41.5475°N 73.124722°W / 41.5475; -73.124722 (Josiah Bronson House)	Middlebury	Wood-frame structure built about 1738 with a gabled roof, central chimney, and clapboarded exterior. The Marquis de Lafayette and his troops camped in the area during the American Revolutionary War in 1781 and 1782.
31	Buckingham House		July 25, 1977 (#77001406)	61 North St. 41°13′42″N 73°03′25″W / 41.228333°N 73.056944°W / 41.228333; -73.056944 (Buckingham House)	Milford	Circa 1725 house with beaded front clapboards, dutch doors, and beautifully designed interior woodwork.
32	Bullet Hill School		February 23, 1972 (#72001346)	Main St. and Seymour Rd. 41°28′56″N 73°12′50″W / 41.482222°N 73.213889°W / 41.482222; -73.213889 (Bullet Hill School)	Southbury	One of the oldest brick school buildings in Connecticut.
33	Thomas Burgis II House		December 28, 2000 (#00001562)	85 Boston St. 41°16′56″N 72°40′41″W / 41.282222°N 72.678056°W / 41.282222; -72.678056 (Thomas Burgis II House)	Guilford	Circa 1735 Colonial saltbox house.
34	Canoe Brook Historic District	More images	April 11, 2002 (#02000335)	Roughly along Bradley St., Cherry Hill Rd., Home Place, Lincoln Ave., and Main and N. Harbor Sts. 41°16′37″N 72°49′21″W / 41.276944°N 72.8225°W / 41.276944; -72.8225 (Canoe Brook Historic District)	Branford	Residential area first settled in the 1680s; includes the Harrison House Museum and the Thomas Harrison House, the district's oldest surviving buildings.
35	Dr. Andrew Castle House		March 31, 2000 (#00000299)	555 Amity Rd. 41°22′38″N 73°00′04″W / 41.377222°N 73.001111°W / 41.377222; -73.001111 (Dr. Andrew Castle House)	Woodbridge	High-style Greek Revival from 1838; home of three prominent local physicians.
36	Center Street Cemetery		August 1, 1997 (#97000833)	2 Center St. 41°27′19″N 72°49′26″W / 41.455278°N 72.823889°W / 41.455278; -72.823889 (Center Street Cemetery)	Wallingford	Dating from about 1670, this cemetery has memorials to Lyman Hall and Moses Yale Beach.
37	Charter Oak Firehouse		March 17, 1994 (#94000255)	105 Hanover St. 41°32′12″N 72°48′24″W / 41.536667°N 72.806667°W / 41.536667; -72.806667 (Charter Oak Firehouse)	Meriden	Romanesque building from 1876 with prominent four-story tower.
38	Chatfield Farmstead		March 15, 2010 (#10000061)	265 Seymour Rd. 41°23′36″N 73°02′35″W / 41.393386°N 73.043094°W / 41.393386; -73.043094 (Chatfield Farmstead)	Woodbridge	Gothic revival main house and three level bank barn.
39	Cheshire Historic District	More images	August 29, 1986 (#86002793)	Roughly bounded by Main St., Highland Ave., Wallingford Rd., S. Main, Cornwall, and Spring Sts. 41°29′50″N 72°54′15″W / 41.497222°N 72.904167°W / 41.497222; -72.904167 (Cheshire Historic District)	Cheshire	Noteworthy eighteenth and nineteenth century structures including the Cheshire Town Hall, Congregational Church, Hitchcock-Phillips House and Abijah Beach Tavern.
40	Colony Street-West Main Street Historic District		September 4, 1987 (#87001387)	1-62 Colony, 55 Grove, 1-119 and 82-110 W. Main Sts. 41°32′19″N 72°48′17″W / 41.538611°N 72.804722°W / 41.538611; -72.804722 (Colony Street-West Main Street Historic District)	Meriden	Commercial and mixed residential-commercial buildings built from about 1850 to 1940.
41	Congregation Mishkan Israel		May 20, 2021 (#100006598)	785 Ridge Rd. 41°21′22″N 72°54′04″W / 41.3562°N 72.9011°W / 41.3562; -72.9011 (Congregation Mishkan Israel)	Hamden	Mid-twentieth-century modern synagogue; congregation long associated with the civil rights movement.
42	Curtis Memorial Library	More images	April 27, 1981 (#81000618)	175 E. Main St. 41°32′08″N 72°47′53″W / 41.535556°N 72.798056°W / 41.535556; -72.798056 (Curtis Memorial Library)	Meriden	Classical revival built in 1903 from white Vermont marble and topped with a copper dome.
43	Reuben Curtiss House		July 29, 1993 (#93000658)	1770 Bucks Hill Rd. 41°28′33″N 73°10′11″W / 41.4758°N 73.1697°W / 41.4758; -73.1697 (Reuben Curtiss House)	Southbury	Built in 1840, incorporating earlier elements, resulting in a blend of Colonial and Greek Revival styles.
44	Thomas Darling House and Tavern		January 17, 1979 (#79002639)	East of Woodbridge at 1907 Litchfield Turnpike 41°21′41″N 72°58′59″W / 41.3614°N 72.9830°W / 41.3614; -72.9830 (Thomas Darling House and Tavern)	Woodbridge	Well-preserved Colonial Cape from 1774.
45	James Alexis Darling House		September 4, 2020 (#100005527)	1932 Litchfield Trnpk. (CT 69) 41°21′53″N 72°58′56″W / 41.3646°N 72.9822°W / 41.3646; -72.9822 (James Alexis Darling House)	Woodbridge	Greek revival farmhouse from 1842.
46	Depot Street Bridge		March 9, 2007 (#07000108)	Depot St. 41°26′31″N 73°03′48″W / 41.4419°N 73.0633°W / 41.4419; -73.0633 (Depot Street Bridge)	Beacon Falls	Parker through truss.
47	Jonathan Dickerman II House		April 15, 1982 (#82004351)	105 Mt. Carmel Ave. 41°25′11″N 72°54′02″W / 41.4197°N 72.9006°W / 41.4197; -72.9006 (Jonathan Dickerman II House)	Hamden	Build about 1795, a well-preserved and unusual example of late Georgian architecture.
48	Downtown Seymour Historic District	More images	August 25, 1983 (#83001279)	Roughly bounded by the Naugatuck River, Main, Wakeley, and DeForest Sts. 41°23′39″N 73°04′28″W / 41.3942°N 73.0744°W / 41.3942; -73.0744 (Downtown Seymour Historic District)	Seymour	Late-nineteenth and early twentieth-century commercial, civic, industrial and residential buildings reflect the town’s historical development.
49	Downtown Waterbury Historic District	More images	August 3, 1983 (#83001280)	Roughly bounded by Main, Meadow, and Elm Sts. 41°33′19″N 73°02′34″W / 41.5553°N 73.0428°W / 41.5553; -73.0428 (Downtown Waterbury Historic District)	Waterbury	Historic core of downtown Waterbury, with most buildings from era after early 20th-century fire.
50	Dudley Farm Historic District	Upload image	January 24, 2023 (#100008609)	2351 Durham Rd. 41°21′16″N 72°43′12″W / 41.3545°N 72.7199°W / 41.3545; -72.7199 (Dudley Farm Historic District)	Guilford
51	Dudleytown Historic District	More images	August 9, 1991 (#91000951)	Roughly Clapboard Hill Rd. from Tanner Marsh Rd. to Murray Ln., East River Rd. southeast to Trailwood Dr., and Duck Hole Rd. 41°17′58″N 72°39′29″W / 41.2994°N 72.6581°W / 41.2994; -72.6581 (Dudleytown Historic District)	Guilford	Primarily rural vernacular residences and farm outbuildings of the 18th and 19th centuries.
52	East Haven Green Historic District		April 11, 2002 (#02000336)	263, 270, 274 Hemingway Ave., 125, 129, 133, 139, 143, 150 Main St., 3, 7, 11, 15, 23, 27, 39, 47 Park Pl., and 58 and 100 River St. 41°16′28″N 72°52′03″W / 41.2744°N 72.8675°W / 41.2744; -72.8675 (East Haven Green Historic District)	East Haven	Town green and surrounding area including two cemeteries as well as 18th and 19th century houses in Colonial, Italianate and Queen Anne styles.
53	East Haven High School		April 23, 2020 (#100005190)	200 Tyler St. 41°16′31″N 72°52′34″W / 41.2753°N 72.8761°W / 41.2753; -72.8761 (East Haven High School)	East Haven	Three-story masonry former high school built in 1936.
54	East Rock Park	More images	April 15, 1997 (#97000299)	Roughly bounded by State, Davis, and Livingston Sts., Park and Mitchell Drs., and Whitney Ave. 41°19′41″N 72°54′21″W / 41.3281°N 72.9058°W / 41.3281; -72.9058 (East Rock Park)	Hamden	Designed by the Olmsted Brothers and Donald Grant Mitchell; surmounted by the Soldiers' and Sailors' Monument.
55	Edgerton	More images	September 19, 1988 (#88001469)	840 Whitney Ave. 41°20′04″N 72°54′51″W / 41.3345°N 72.9143°W / 41.3345; -72.9143 (Edgerton)	Hamden	This 20-acre (8.1 ha) historic district is a public park, the site of the estate of Frederick F. Brewster, the industrialist. The 1909 mansion was demolished in 1964 leaving the gatehouse, carriage house, greenhouses, other structures, and landscaped grounds.[7]: 4, 6  Extends into New Haven.
56	Eells-Stow House		June 17, 1977 (#77001407)	34 High St. 41°13′08″N 73°03′28″W / 41.2189°N 73.0578°W / 41.2189; -73.0578 (Eells-Stow House)	Milford	The oldest portions of this saltbox date to about 1700.
57	Jared Eliot House		November 14, 1985 (#85002792)	88 Old Chaffinch Island Rd. 41°16′17″N 72°41′17″W / 41.2714°N 72.6881°W / 41.2714; -72.6881 (Jared Eliot House)	Guilford	Built in 1723 by Jared Eliot, minister, physician, author and agriculturalist.
58	Elton Hotel		June 30, 1983 (#83001282)	16-30 W. Main St. 41°33′24″N 73°02′30″W / 41.5567°N 73.0417°W / 41.5567; -73.0417 (Elton Hotel)	Waterbury	1906 Second Renaissance Revival hotel built in the wake of fire to replace the lost Scovill Hotel.
59	Falkner's Island Lighthouse	More images	May 29, 1990 (#89001467)	Long Island Sound, 5 miles south of Guilford 41°12′42″N 72°39′15″W / 41.2117°N 72.6542°W / 41.2117; -72.6542 (Falkner's Island Lighthouse)	Guilford	Commissioned by President Thomas Jefferson and constructed in 1802.
60	Farmington Canal-New Haven and Northampton Canal	More images	September 12, 1985 (#85002664)	Roughly from Suffield in Hartford County to New Haven in New Haven County 41°19′26″N 72°55′51″W / 41.3239°N 72.9308°W / 41.3239; -72.9308 (Farmington Canal-New Haven and Northampton Canal)	Hamden, Cheshire, and New Haven	Built as a canal, later became a railroad line, and now a multi-use trail. Extends into New Haven as well as into Hartford County.
61	Farmington Canal Lock		February 16, 1973 (#73001949)	487 N. Brooksvale Rd. 41°28′34″N 72°55′23″W / 41.4761°N 72.9231°W / 41.4761; -72.9231 (Farmington Canal Lock)	Cheshire	1822 lock on the Farmington Canal
62	Farmington Canal Lock No. 13	More images	May 6, 1982 (#82004350)	Brooksvale Ave. 41°27′32″N 72°55′06″W / 41.4589°N 72.9183°W / 41.4589; -72.9183 (Farmington Canal Lock No. 13)	Hamden	Unrestored lock on the Farmington Canal
63	First Congregational Church of Cheshire	More images	February 16, 1973 (#73001950)	111 Church Dr. 41°29′53″N 72°54′13″W / 41.4981°N 72.9036°W / 41.4981; -72.9036 (First Congregational Church of Cheshire)	Cheshire	Federal-style church designed by David Hoadley and built in 1827.
64	First Congregational Church of East Haven	More images	March 25, 1982 (#82004349)	251 Main St. 41°16′41″N 72°52′19″W / 41.2781°N 72.8719°W / 41.2781; -72.8719 (First Congregational Church of East Haven)	East Haven	One of Connecticut's few surviving pre-Revolutionary churches and one of New England's oldest stone churches.
65	Fourth District School		August 29, 1985 (#85001917)	Old Post Rd. 41°23′41″N 72°47′28″W / 41.3947°N 72.7911°W / 41.3947; -72.7911 (Fourth District School)	North Branford	Late 18th-century wood-frame schoolhouse; moved from its original location in 1928, with a major restoration in 1965.
66	Edward Frisbie Homestead		May 16, 1985 (#85001058)	240 Stony Creek Rd. 41°16′31″N 72°45′27″W / 41.275278°N 72.7575°W / 41.275278; -72.7575 (Edward Frisbie Homestead)	Branford	Elegant circa 1790 clapboard house.
67	Edward Frisbie House		December 1, 1988 (#88002638)	699 E. Main St. 41°18′15″N 72°45′22″W / 41.304167°N 72.756111°W / 41.304167; -72.756111 (Edward Frisbie House)	Branford	Fine Georgian house from about 1750.
68	Lewis Fulton Memorial Park		December 27, 1990 (#90001951)	Roughly bounded by Cook, Pine, Fern and Charlotte Sts. 41°34′14″N 73°02′22″W / 41.5706°N 73.0394°W / 41.5706; -73.0394 (Lewis Fulton Memorial Park)	Waterbury	Designed by the Olmsted Brothers landscape architects and largely completed by 1925.
69	Solomon Goffe House		January 16, 1979 (#79002645)	677 N. Colony St. 41°33′10″N 72°47′19″W / 41.552778°N 72.788611°W / 41.552778; -72.788611 (Solomon Goffe House)	Meriden	Historic saltbox house
70	Griswold House		October 10, 1975 (#75001929)	Boston St. 41°17′00″N 72°40′29″W / 41.283333°N 72.674722°W / 41.283333; -72.674722 (Griswold House)	Guilford	Late 18th-century saltbox house. The property also includes a blacksmith shop, a barn, two corn cribs and a three-seat outhouse.
71	Guilford Historic Town Center	More images	July 6, 1976 (#76001988)	Bounded by West River, Interstate 95, East Creek and Long Island Sound 41°16′49″N 72°40′37″W / 41.280278°N 72.676944°W / 41.280278; -72.676944 (Guilford Historic Town Center)	Guilford	More than 600 historic structures, most built between the late 17th and early 20th centuries, including the oldest house in the state, the Henry Whitfield House.
72	Hamden Bank & Trust Building		March 1, 1990 (#90000148)	1 Circular Ave. 41°20′47″N 72°56′04″W / 41.346389°N 72.934444°W / 41.346389; -72.934444 (Hamden Bank & Trust Building)	Hamden	Classical Revival building from 1927.
73	Hamden High School		December 12, 1994 (#94001378)	2040 Dixwell Ave. 41°22′03″N 72°55′19″W / 41.3675°N 72.921944°W / 41.3675; -72.921944 (Hamden High School)	Hamden	Built in 1935 during the Great Depression with a prominent golden cupola atop a clock tower.
74	Hamden Memorial Town Hall	More images	April 12, 2001 (#01000355)	2372 Whitney Ave. 41°23′02″N 72°54′09″W / 41.383889°N 72.9025°W / 41.383889; -72.9025 (Hamden Memorial Town Hall)	Hamden	Colonial Revival building with Neo-Classical details completed in 1924.
75	Hamilton Park		August 15, 1996 (#96000846)	Roughly bounded by Silver St., E. Main St., Idylwood Ave., Plank Rd., the Mad River, and Interstate 84 41°32′36″N 73°01′04″W / 41.543333°N 73.017778°W / 41.543333; -73.017778 (Hamilton Park)	Waterbury	Oldest park in Waterbury, founded in 1898.
76	Hammonasset Paper Mill Site	More images	February 23, 1996 (#96000128)	Green Hill Road at the Hammonasset River[8] 41°19′27″N 72°35′36″W / 41.3241°N 72.5932°W / 41.3241; -72.5932 (Hammonasset Paper Mill Site)	Madison	Industrial archaeological site containing the remains of a paper mill built in 1865 and operated until 1890. Extends into Killingworth in Middlesex County.
77	Thomas Harrison House		December 1, 1988 (#88002644)	23 N. Harbor St. 41°16′34″N 72°49′23″W / 41.276111°N 72.823056°W / 41.276111; -72.823056 (Thomas Harrison House)	Branford	Early 18th-century gambrel-roofed clapboard house.
78	Hebrew Congregation of Woodmont		July 21, 1995 (#95000860)	15 and 17 Edgefield Ave. 41°13′33″N 73°00′05″W / 41.225833°N 73.001389°W / 41.225833; -73.001389 (Hebrew Congregation of Woodmont)	Milford	Historic summer synagogue from 1926.
79	Enoch Hibbard House and George Granniss House		April 9, 1979 (#79002640)	33 and 41 Church St. 41°33′21″N 73°02′37″W / 41.5558°N 73.043638°W / 41.5558; -73.043638 (Enoch Hibbard House and George Granniss House)	Waterbury	An adjoining pair of Italianate houses. The Hibbard house was built in 1864 with a square cupola. The Granniss house was built in 1868 with Stick style elements.
80	Hillside Historic District	More images	August 20, 1987 (#87001384)	Roughly bounded by Woodlawn Terrace, W. Main, and Willow 41°33′37″N 73°02′28″W / 41.560278°N 73.041111°W / 41.560278; -73.041111 (Hillside Historic District)	Waterbury	Residential district with a range of styles including Greek Revival, Queen Anne, and Colonial Revival developed between 1840 and 1920. Highlights include the Wilby High School and the Benedict-Miller House, both also listed separately.
81	Isaac Hoadley House		December 1, 1988 (#88002647)	9 Totoket Rd. 41°16′52″N 72°46′32″W / 41.281111°N 72.775556°W / 41.281111; -72.775556 (Isaac Hoadley House)	Branford	Georgian residence from 1757 with later Greek Revival additions.
82	John Hoadley House		December 1, 1988 (#88002674)	213 Leete's Island Rd. 41°17′14″N 72°45′33″W / 41.287222°N 72.759167°W / 41.287222; -72.759167 (John Hoadley House)	Branford	1810 late colonial saltbox.
83	Orrin Hoadley House		December 1, 1988 (#88002646)	15 Sunset Hill Rd. 41°17′00″N 72°46′53″W / 41.283333°N 72.781389°W / 41.283333; -72.781389 (Orrin Hoadley House)	Branford	Circa 1785 late colonial residence.
84	Home Woolen Company		November 29, 1984 (#84000410)	Main St. 41°26′34″N 73°03′45″W / 41.442778°N 73.0625°W / 41.442778; -73.0625 (Home Woolen Company)	Beacon Falls	Monumental industrial complex stands as a reminder of the social and economic history of the town.
85	David Hotchkiss House		May 1, 1981 (#81000617)	Waterbury Rd. 41°30′44″N 72°59′05″W / 41.512222°N 72.984722°W / 41.512222; -72.984722 (David Hotchkiss House)	Prospect	Federal residence built in 1820; now a museum.
86	House at 161 Damascus Road		December 1, 1988 (#88002632)	161 Damascus Rd. 41°17′07″N 72°46′53″W / 41.285278°N 72.781389°W / 41.285278; -72.781389 (House at 161 Damascus Road)	Branford	Mid-18th-century colonial residence.
87	House at 29 Flat Rock Road		December 1, 1988 (#88002640)	29 Flat Rock Rd. 41°17′06″N 72°45′19″W / 41.2851°N 72.7553°W / 41.2851; -72.7553 (House at 29 Flat Rock Road)	Branford	Late 18th century vernacular farmhouse.
88	Eliphalet Howd House		December 1, 1988 (#88002637)	675 E. Main St. 41°18′10″N 72°45′28″W / 41.302778°N 72.757778°W / 41.302778; -72.757778 (Eliphalet Howd House)	Branford	18th-century two-story Georgian residence.
89	Howd-Linsley House		December 10, 1986 (#86003382)	1795 Middletown Ave. 41°24′34″N 72°46′06″W / 41.409444°N 72.768333°W / 41.409444; -72.768333 (Howd-Linsley House)	North Branford	18th-century saltbox.
90	John I. Howe House		February 6, 1989 (#88003229)	213 Caroline St. 41°19′24″N 73°05′16″W / 41.323333°N 73.087778°W / 41.323333; -73.087778 (John I. Howe House)	Derby	Home of pin manufacturing pioneer.
91	Hubbard Park	More images	December 15, 1997 (#97001466)	Roughly bounded by W. Main St., Interstate 691, CT 66, Reservoir Ave., Edgewood Dr., and Berlin and Southington town lines 41°33′45″N 72°50′05″W / 41.5625°N 72.834722°W / 41.5625; -72.834722 (Hubbard Park)	Meriden and, in Hartford County, Berlin and Southington	1,800 acres (7.3 km2) and home to Castle Craig.
92	Gen. David Humphreys House		March 17, 1972 (#72001321)	37 Elm St. 41°19′52″N 73°04′30″W / 41.331111°N 73.075°W / 41.331111; -73.075 (Gen. David Humphreys House)	Ansonia	Built in the 1690s, this house was the birthplace of the American Revolutionary War Colonel David Humphreys, friend of and aide de camp to General George Washington.
93	William Hurd House		July 29, 1993 (#93000659)	327 Hulls Hill Rd. 41°27′25″N 73°10′29″W / 41.456944°N 73.174722°W / 41.456944; -73.174722 (William Hurd House)	Southbury	Federal structure built in the late 18th century and enlarged about 1820.
94	Hurley Road Historic District	More images	July 29, 1993 (#93000662)	6 and 17 Hurley Rd. 41°28′33″N 73°09′31″W / 41.475833°N 73.158611°W / 41.475833; -73.158611 (Hurley Road Historic District)	Southbury	A pair of properties built by cousins in the early 19th-century including Federal and Greek Revival houses and other outbuildings.
95	Hyland-Wildman House		March 26, 1976 (#76001989)	Boston St. 41°16′57″N 72°40′43″W / 41.2825°N 72.678611°W / 41.2825; -72.678611 (Hyland-Wildman House)	Guilford	Saltbox built about 1713 and extensively restored in 1917.
96	Ives-Baldwin House		May 1, 2003 (#03000308)	474 Baldwin Ave. 41°32′39″N 72°45′42″W / 41.5443°N 72.7616°W / 41.5443; -72.7616 (Ives-Baldwin House)	Meriden	Traditional Georgian farmhouse built about 1798.
97	Elam Ives House	More images	October 12, 2010 (#10000832)	95 Ives St. 41°24′13″N 72°53′43″W / 41.403611°N 72.895278°W / 41.403611; -72.895278 (Elam Ives House)	Hamden	Wood-frame structure built in 1790 with a gabled roof, central chimney, and shingled exterior.
98	Alphonso Johnson House		January 17, 1992 (#91001922)	1 Gilbert Ave. 41°21′26″N 72°56′15″W / 41.357222°N 72.9375°W / 41.357222; -72.9375 (Alphonso Johnson House)	Hamden	Distinctive Greek Revival with Italianate features built in 1859.
99	Franklin Johnson House		November 23, 1998 (#98001420)	153 S. Main St. 41°27′06″N 72°49′15″W / 41.451667°N 72.820833°W / 41.451667; -72.820833 (Franklin Johnson House)	Wallingford	1866 Italianate house with stylistically similar multi-seat outhouse.
100	Theophilus Jones House		January 30, 1992 (#91001981)	40 Jones Rd. 41°26′51″N 72°51′10″W / 41.4475°N 72.852778°W / 41.4475; -72.852778 (Theophilus Jones House)	Wallingford	Built about 1740 and restored in the 1940s by Charles F. Montgomery.
101	John Kendrick House		April 12, 1982 (#82004360)	119 W. Main St. 41°33′22″N 73°02′36″W / 41.556111°N 73.043333°W / 41.556111; -73.043333 (John Kendrick House)	Waterbury	1865 brick Italianate house is one of the few remaining residential structures on the Waterbury Green.
102	Kraus Corset Factory		February 12, 1987 (#87000128)	Roosevelt Dr. and 3rd St. 41°19′13″N 73°05′29″W / 41.320278°N 73.091389°W / 41.320278; -73.091389 (Kraus Corset Factory)	Derby	This factory, originally built in 1879, is the only major survivor from Derby's period of corset manufacturing.
103	Laurel Beach Casino		November 1, 2018 (#100003074)	102 6th Ave. 41°11′04″N 73°05′43″W / 41.1845°N 73.0954°W / 41.1845; -73.0954 (Laurel Beach Casino)	Milford	Colonial Revival from 1929, with a large hall and a bowling alley. Not a casino; used for dances, concerts, and other social gatherings.
104	Pelatiah Leete House		October 1, 1974 (#74002048)	Southwest of Guilford off CT 146 41°15′58″N 72°42′53″W / 41.2661°N 72.7148°W / 41.2661; -72.7148 (Pelatiah Leete House)	Guilford	Built in 1710 with some Greek Revival elements and a saltbox profile.
105	Isaac C. Lewis Cottage		July 25, 1997 (#97000811)	255 Thimble Islands Rd. 41°15′46″N 72°45′00″W / 41.262778°N 72.75°W / 41.262778; -72.75 (Isaac C. Lewis Cottage)	Branford	Eclectic late-Victorian seaside summer house built in 1882.
106	Little Pootatuck Brook Archeological Site		June 28, 1990 (#90000980)	Address Restricted	Southbury	Believed to be one of the last habitation sites of the Pootatuck tribe.
107	Madison Green Historic District		June 28, 1982 (#82004353)	446-589 Boston Post Rd. and structures surrounding the green 41°16′41″N 72°36′19″W / 41.278056°N 72.605278°W / 41.278056; -72.605278 (Madison Green Historic District)	Madison	Town green and surrounding structures including the First Congregational Church (1838), Memorial Hall (1896), a community meeting building (c. 1884), Academy Elementary School (1884), and Lee Academy (1821), as well as historic houses, notably the Deacon John Grave House.
108	Maltby-Stevens Factory Site		January 27, 2000 (#99001668)	Address Restricted	North Branford	Remnants of a 19th-century factory that produced an array of products including buttons and dried coconut.
109	Marion Historic District		December 21, 1988 (#88001423)	Along Marion Ave. and Meriden-Waterbury Turnpike 41°33′50″N 72°55′29″W / 41.563889°N 72.924722°W / 41.563889; -72.924722 (Marion Historic District)	Cheshire	Highlights of the district include the Levi B. Frost House, the Barnes-Frost House, the Miles Upson House, and the Lester Beecher House. Extends into Southington; see the Southington list.
110	Richard Mansfield House		March 11, 1971 (#71000906)	35 Jewett St. 41°20′23″N 73°04′14″W / 41.339722°N 73.070556°W / 41.339722; -73.070556 (Richard Mansfield House)	Ansonia	Saltbox built about 1700. Owned by prominent loyalist Episcopal minister.
111	Matthews and Willard Factory		January 14, 1988 (#87002419)	16 Cherry Ave. 41°33′24″N 73°02′10″W / 41.556667°N 73.036111°W / 41.556667; -73.036111 (Matthews and Willard Factory)	Waterbury	Brass industry factory complex; now demolished.
112	Medad Stone Tavern		January 30, 2009 (#08001378)	197 Three Mile Course 41°17′03″N 72°41′46″W / 41.284167°N 72.696111°W / 41.284167; -72.696111 (Medad Stone Tavern)	Guilford	1803 Federal residence; never actually used as a tavern.
113	Meeting House Hill Historic District	More images	December 14, 1987 (#87002132)	Roughly bounded by Long Hill, Great Hill, and Ledge Hill Rds. 41°22′00″N 72°43′42″W / 41.366667°N 72.728333°W / 41.366667; -72.728333 (Meeting House Hill Historic District)	Guilford	North Guilford Congregational Church, St. John's Episcopal Church, associated buildings and a cemetery. The arrangement reflects a spirit of religious tolerance that allowed churches from two different congregations to heal long-standing divisions.
114	Meigs-Bishop House		June 16, 1988 (#88000745)	45 Wall St. 41°16′52″N 72°35′40″W / 41.281111°N 72.594444°W / 41.281111; -72.594444 (Meigs-Bishop House)	Madison	Saltbox; earliest portion built circa 1690.
115	Meriden Curtain Fixture Company Factory		December 4, 1986 (#86003290)	122 Charles St. 41°31′52″N 72°47′30″W / 41.531111°N 72.791667°W / 41.531111; -72.791667 (Meriden Curtain Fixture Company Factory)	Meriden	Factory complex buildings, built in 1892, of brick with brownstone foundations and sills. All have a distinctive decorative band of terra cotta tiles below the eaves.
116	Middlebury Center Historic District	More images	May 9, 1985 (#85001019)	Roughly bounded by Library Rd., North and South Sts., and Whittemore Rd. 41°31′35″N 73°07′33″W / 41.526389°N 73.125833°W / 41.526389; -73.125833 (Middlebury Center Historic District)	Middlebury	Civic, religious and residential structures from the 18th to early 20th century.
117	Milford Point Hotel		January 22, 1988 (#87002417)	Milford Point Rd. 41°10′33″N 73°06′07″W / 41.175833°N 73.101944°W / 41.175833; -73.101944 (Milford Point Hotel)	Milford	One of the oldest surviving coastal hotel buildings in the state; now the Connecticut Audubon Society Coastal Center.
118	Henry F. Miller House	More images	April 25, 2001 (#01000399)	30 Derby Ave. 41°18′02″N 72°59′15″W / 41.300556°N 72.9875°W / 41.300556; -72.9875 (Henry F. Miller House)	Orange	International style house from 1949.
119	Mount Carmel Congregational Church and Parish House	More images	December 27, 1991 (#91001847)	3280 and 3284 Whitney Ave., 195 Sherman Ave. 41°24′50″N 72°54′09″W / 41.413889°N 72.9025°W / 41.413889; -72.9025 (Mount Carmel Congregational Church and Parish House)	Hamden	1840 Greek Revival church and 1911 Colonial Revival parish house.
120	Jonathan Murray House		April 12, 1982 (#82004354)	76 Scotland Rd. 41°17′11″N 72°34′49″W / 41.286389°N 72.580278°W / 41.286389; -72.580278 (Jonathan Murray House)	Madison	First Period residence built about 1690.
121	Naugatuck Center Historic District		July 30, 1999 (#99000859)	Roughly bounded by Fairview Ave., Hillside Ave., Terrace Ave., Water St., and Pleasant View St. 41°29′29″N 73°03′27″W / 41.491389°N 73.0575°W / 41.491389; -73.0575 (Naugatuck Center Historic District)	Naugatuck	Churches, schools and municipal buildings centered around the town green. Highlights include the Bronson B. Tuttle House and the post office.
122	Nehemiah Royce House		August 24, 1998 (#98000966)	538 N. Main St. 41°27′59″N 72°48′48″W / 41.466389°N 72.813333°W / 41.466389; -72.813333 (Nehemiah Royce House)	Wallingford	1672 saltbox house, visited twice by George Washington.
123	New England Cement Company Kiln and Quarry		April 25, 2001 (#00001454)	Address Restricted 41°22′36″N 72°58′40″W / 41.376667°N 72.977778°W / 41.376667; -72.977778 (New England Cement Company Kiln and Quarry)	Woodbridge	Archaeological industrial site.
124	Norcross Brothers Granite Quarry		June 6, 2003 (#03000315)	Quarry Rd. 41°17′01″N 72°44′32″W / 41.283611°N 72.742222°W / 41.283611; -72.742222 (Norcross Brothers Granite Quarry)	Branford	Opened in 1887 and supplied granite for the base of the Statue of Liberty, the Corcoran Gallery of Art, and the Marshall Field and Company Building, among others.
125	North Branford Center Historic District	More images	December 9, 1999 (#99001472)	Roughly along Church and North Sts. 41°19′46″N 72°45′52″W / 41.329444°N 72.764444°W / 41.329444; -72.764444 (North Branford Center Historic District)	North Branford	Includes the town green, Congregational Church, cemetery, and other civic structures, as well as residences dating to the colonial period.
126	Northford Center Historic District	More images	December 31, 2002 (#02001629)	Roughly along Middletown Ave. and parts of Old Post Rd. 41°24′00″N 72°46′59″W / 41.4°N 72.783056°W / 41.4; -72.783056 (Northford Center Historic District)	North Branford	The district includes many fine pre-Civil-War houses (including the Howd-Linsley House), two churches (including the gothic-revival Northford Congregational Church designed by Henry Austin), and a schoolhouse (the Fourth District School).
127	Norton House		December 1, 1988 (#88002645)	200 Pine Orchard Rd. 41°16′16″N 72°46′57″W / 41.2710°N 72.7825°W / 41.2710; -72.7825 (Norton House)	Branford	Circa 1715 saltbox house.
128	Old West Haven High School		October 24, 1985 (#85003368)	278 Main St. 41°16′23″N 72°56′49″W / 41.2731°N 72.9469°W / 41.2731; -72.9469 (Old West Haven High School)	West Haven	Classical Revival school, converted to residential; also formerly the Giannotti Junior High School.
129	Orange Center Historic District		August 10, 1989 (#89001089)	Roughly Orange Center Rd. from Orange Cemetery to Nan Dr. 41°16′36″N 73°01′40″W / 41.276667°N 73.027778°W / 41.276667; -73.027778 (Orange Center Historic District)	Orange	Includes the federal style 1810 Orange Congregational Church by David Hoadley and the 1878 stick style Academy schoolhouse.
130	Osbornedale		June 13, 1986 (#86001256)	500 Hawthorne Ave. 41°19′51″N 73°06′27″W / 41.330833°N 73.1075°W / 41.330833; -73.1075 (Osbornedale)	Derby	Historic nineteenth-century farmhouse.
131	Overlook Historic District	More images	June 7, 1988 (#88000662)	Roughly bounded by Hecla St., Farmington and Columbia Boulevard, Cables Ave. and Clowes Terrace, and Lincoln and Fiske Sts. 41°34′13″N 73°02′54″W / 41.570278°N 73.048333°W / 41.570278; -73.048333 (Overlook Historic District)	Waterbury	Includes a fine concentration of residential architecture from the early 20th century, in Colonial Revival, as well as Queen Anne and Craftsman styles.
132	Palace Theater		June 30, 1983 (#83001284)	86-110 E. Main St. 41°33′19″N 73°02′23″W / 41.555278°N 73.039722°W / 41.555278; -73.039722 (Palace Theater)	Waterbury	Renaissance Revival structure built in 1921 with extensive renovation in 2004.
133	Hezekiah Palmer House		December 1, 1988 (#88002641)	340-408 Leete's Island Rd. 41°16′30″N 72°45′25″W / 41.275°N 72.756944°W / 41.275; -72.756944 (Hezekiah Palmer House)	Branford	Early 19th century house with transitional Colonial/Greek Revival styling.
134	Isaac Palmer House		December 1, 1988 (#88002643)	736-756 Main St. 41°16′47″N 72°48′57″W / 41.279722°N 72.815833°W / 41.279722; -72.815833 (Isaac Palmer House)	Branford	Circa 1810 Federal residence.
135	Samuel Parsons House		April 12, 1982 (#82004358)	180 S. Main St. 41°27′04″N 72°49′14″W / 41.451111°N 72.820556°W / 41.451111; -72.820556 (Samuel Parsons House)	Wallingford	Georgian residence built in 1770.
136	Pine Orchard Union Chapel		July 19, 2000 (#00000815)	25 Chapel Dr. 41°16′00″N 72°46′34″W / 41.2667°N 72.7760°W / 41.2667; -72.7760 (Pine Orchard Union Chapel)	Branford	Queen-Anne seasonal resort chapel from 1897.
137	Pines Bridge Historic District	More images	May 27, 1988 (#88000577)	3-17 Bishop St., 70-99 Old Broadway, 2-10 Philip Pl., and 9-56 State St. 41°23′15″N 72°52′23″W / 41.3875°N 72.873056°W / 41.3875; -72.873056 (Pines Bridge Historic District)	North Haven	Once a commercial and industrial hub, now mainly residential. Greek Revival, Queen Anne and other Victorian styles predominate.
138	Pistol Factory Dwelling		December 27, 1991 (#91001846)	1322 Whitney Ave. 41°20′57″N 72°54′51″W / 41.349167°N 72.914167°W / 41.349167; -72.914167 (Pistol Factory Dwelling)	Hamden	Greek Revival worker's boarding house, built by Eli Whitney Jr., son of Eli Whitney, in 1845.
139	Elisha Pitkin House		April 6, 1979 (#79002646)	173 High Woods Dr. 41°18′56″N 72°42′07″W / 41.315556°N 72.701944°W / 41.315556; -72.701944 (Elisha Pitkin House)	Guilford	The oldest portion dates from 1690. The house was moved from East Hartford in the 1950s.
140	Plaster House		July 29, 1993 (#93000660)	117 Plaster House Rd. 41°27′00″N 73°10′01″W / 41.45°N 73.166944°W / 41.45; -73.166944 (Plaster House)	Southbury	Mid-18th-century residence built out of rubble stone and covered in stucco.
141	Col. Asa Platt House		December 31, 2002 (#02001630)	2 Tyler City Rd. 41°17′12″N 73°00′41″W / 41.286667°N 73.011389°W / 41.286667; -73.011389 (Col. Asa Platt House)	Orange	Federal-style house from 1810.
142	Prospect Green Historic District	More images	June 16, 2000 (#00000560)	2, 8, 10, 12, 17, 19, 21, 23, 25, 27, and 30 Center St. 41°30′04″N 72°58′42″W / 41.501111°N 72.978333°W / 41.501111; -72.978333 (Prospect Green Historic District)	Prospect	The town green and surrounding structures including the Tuttle Library (1905), Civil War Monument (1907), Congregational Church (1945), Center School (1867) and Grange (1947).
143	Quaker Farms Historic District	More images	August 9, 1991 (#91000993)	467-511 Quaker Farms Rd. 41°25′34″N 73°09′24″W / 41.426111°N 73.156667°W / 41.426111; -73.156667 (Quaker Farms Historic District)	Oxford	Christ Church Episcopal (1814) and 11 houses in Colonial, Federal, Greek Revival, Queen Anne, and Colonial Revival styles.
144	Red Bridge	More images	December 10, 1993 (#93001345)	Near Oregon Rd. over the Quinnipiac River 41°31′20″N 72°50′20″W / 41.522222°N 72.838889°W / 41.522222; -72.838889 (Red Bridge)	Meriden	Lenticular truss.
145	Nathaniel Richardson House		September 19, 1977 (#77001405)	Northeast of Middlebury on Kelly Rd. 41°32′40″N 73°05′37″W / 41.544444°N 73.093611°W / 41.544444; -73.093611 (Nathaniel Richardson House)	Middlebury	Built about 1800, this house is no longer standing.
146	Rising Sun Tavern		August 21, 1979 (#79002638)	Old Tavern Lane 41°22′20″N 72°49′27″W / 41.372222°N 72.824167°W / 41.372222; -72.824167 (Rising Sun Tavern)	North Haven	Well-preserved 18th-century tavern house.
147	River Park Historic District		August 14, 1986 (#86002648)	Roughly bounded by Boston Post Rd., Cherry St. and Amtrak line, and High St. 41°13′38″N 73°03′30″W / 41.227222°N 73.058333°W / 41.227222; -73.058333 (River Park Historic District)	Milford	Centered around a series of parks along the Wepawaug River encompassing the residential and civic heart of the city. Highlights include the Thomas Buckingham House, the town hall (1916) and the Congregational Church (1823).
148	Riverside Cemetery	More images	September 20, 1988 (#88001525)	Riverside St. from Sunnyside to Summit Sts. 41°32′52″N 73°02′57″W / 41.547778°N 73.049167°W / 41.547778; -73.049167 (Riverside Cemetery)	Waterbury	Dedicated in 1853, this cemetery on the bank of the Naugatuck River includes an array of funerary monuments in gothic, neo-classical, and romantic styles.
149	John Rogers House		December 1, 1988 (#88002642)	690 Leete's Island Rd. 41°16′12″N 72°44′14″W / 41.27°N 72.737222°W / 41.27; -72.737222 (John Rogers House)	Branford	Well-preserved and researched 18th-century New England Colonial house.
150	Route 146 Historic District		April 5, 1990 (#90000569)	Route 146 between Flat Rock Rd. and West River bridge 41°16′07″N 72°42′50″W / 41.268611°N 72.713889°W / 41.268611; -72.713889 (Route 146 Historic District)	Branford and Guilford	Rural residential architecture with styles covering from the early 18th to early 20th centuries. Highlights include the John Rogers House and the Pelatiah Leete House.
151	Russian Village Historic District	More images	December 8, 1988 (#88002687)	Roughly Kiev Dr. and Russian Village Rd. between U.S. Route 6 and the Pomperaug River 41°26′56″N 73°15′10″W / 41.448889°N 73.252778°W / 41.448889; -73.252778 (Russian Village Historic District)	Southbury	Summer colony for Russian emigres founded in the 1920s with distinctive Russian touches in the houses and a small chapel.
152	Sabbathday House		October 10, 1975 (#75001931)	19 Union St. 41°17′07″N 72°40′50″W / 41.285278°N 72.680556°W / 41.285278; -72.680556 (Sabbathday House)	Guilford	House built about 1735 for sheltering church-goers between morning and afternoon services.
153	Salem School	More images	November 3, 1983 (#83003582)	124 Meadow St. 41°29′26″N 73°03′27″W / 41.490556°N 73.0575°W / 41.490556; -73.0575 (Salem School)	Naugatuck	Brick Renaissance Revival structure, built in 1893 and designed by McKim, Mead & White.
154	Sanford Road Historic District		July 29, 1993 (#93000657)	480 and 487 Sanford Rd. 41°27′41″N 73°11′05″W / 41.461389°N 73.184722°W / 41.461389; -73.184722 (Sanford Road Historic District)	Southbury	Two farmhouses dating from the late 18th and early 19th centuries, along with associated outbuildings including barns, a chicken coop, a smoke house and a privy.
155	Sanford-Humphreys House		May 11, 1982 (#82004357)	61-63 West St. 41°23′39″N 73°04′47″W / 41.394167°N 73.079722°W / 41.394167; -73.079722 (Sanford-Humphreys House)	Seymour	The oldest parts of the structure date to the 1790s. Owned first by Samuel Sanford, the area's first doctor, and then by soldier, diplomat, and businessman David Humphreys.
156	Seymour High School and Annex	More images	November 17, 1983 (#83003583)	100 Bank St. 41°23′51″N 73°04′36″W / 41.3975°N 73.076667°W / 41.3975; -73.076667 (Seymour High School and Annex)	Seymour	Former high school, later an elementary school, now offices including medical offices.
157	Sheffield Street Bridge		April 12, 2001 (#01000353)	Sheffield St. over Hancock Brook 41°35′50″N 73°02′52″W / 41.597222°N 73.047778°W / 41.597222; -73.047778 (Sheffield Street Bridge)	Waterbury	Lenticular pony truss.
158	Shelley House		February 9, 1989 (#89000017)	248 Boston Post Rd. 41°16′42″N 72°37′45″W / 41.278333°N 72.629167°W / 41.278333; -72.629167 (Shelley House)	Madison	Late 17th-century stone ender enlarged to a saltbox.
159	Short Beach Historic District	More images	October 22, 2017 (#100004544)	Roughly bounded by Shore Dr., Beckett & Clarke Aves., Bungalow & Little Bay Lns, Court, Pentecost & Bristol Sts. 41°15′27″N 72°50′56″W / 41.2576°N 72.8488°W / 41.2576; -72.8488 (Short Beach Historic District)	Branford	Shoreline vacation village in Queen Anne, Shingle, and Colonial Revival styles. Stone walls, sea walls and gate posts included as a contributing resource.
160	Samuel Simpson House		June 18, 1986 (#86001334)	1370 Scard Rd. 41°26′24″N 72°45′29″W / 41.440122°N 72.758116°W / 41.440122; -72.758116 (Samuel Simpson House)	Wallingford	Built in 1838, redesigned about 1867 by Henry Austin and moved from its original location in 1987.
161	Sleeping Giant Tower	More images	September 4, 1986 (#86001754)	200 Mt. Carmel Ave. at Mt. Carmel summit, Sleeping Giant State Park 41°25′50″N 72°53′27″W / 41.430556°N 72.890833°W / 41.430556; -72.890833 (Sleeping Giant Tower)	Hamden	Stone observation tower built in 1936 by the Works Progress Administration.
162	South Britain Historic District	More images	February 12, 1987 (#87000125)	E. Flat Hill, Hawkins, Library, and Middle Rds., and 497-864 S. Britain Rd. 41°28′09″N 73°15′03″W / 41.469167°N 73.250833°W / 41.469167; -73.250833 (South Britain Historic District)	Southbury	Includes houses primarily from the 18th and 19th centuries with Colonial and Greek Revival styles, a Federal church from 1825, and an Italianate town hall from 1873.
163	Southbury Historic District No. 1		March 11, 1971 (#71000917)	Main St. from Woodbury town line to Old Waterbury Rd. 41°29′42″N 73°12′37″W / 41.495°N 73.210278°W / 41.495; -73.210278 (Southbury Historic District No. 1)	Southbury	Predominantly 18th and 19th century buildings, with few 20th-century intrusions.
164	Southbury Training School	More images	May 1, 1992 (#92000368)	1484 S. Britain Rd. 41°27′49″N 73°16′23″W / 41.463611°N 73.273056°W / 41.463611; -73.273056 (Southbury Training School)	Southbury	Residential facility built in the 1930s for adults with intellectual disabilities; 125 primarily brick institutional Georgian and Colonial Revival buildings. Extends into Roxbury; see the Litchfield County list.
165	Southwest District School		April 2, 1982 (#82004363)	155 Nichols Rd. 41°34′49″N 72°59′10″W / 41.580278°N 72.986111°W / 41.580278; -72.986111 (Southwest District School)	Wolcott	Built in the early 1820s from locally quarried granite.
166	St. Peter's Episcopal Church		August 21, 1979 (#79002644)	61, 71, 81 River St. 41°13′27″N 73°03′27″W / 41.224167°N 73.0575°W / 41.224167; -73.0575 (St. Peter's Episcopal Church)	Milford	Gothic Revival church built from Portland brownstone in 1850–51, along with rectory and parish hall.
167	Stapleton Building		January 14, 1988 (#87002421)	751 N. Main St. 41°33′49″N 73°01′58″W / 41.563611°N 73.032778°W / 41.563611; -73.032778 (Stapleton Building)	Waterbury	Mixed-use Renaissance Revival building, now demolished.
168	State Park Supply Yard		September 4, 1986 (#86001757)	51 Mill Rd. 41°16′37″N 72°33′39″W / 41.276944°N 72.560833°W / 41.276944; -72.560833 (State Park Supply Yard)	Madison	Maintenance facility built in 1933-35 by crews of the Civilian Conservation Corps.
169	Sterling Opera House		November 8, 1968 (#68000040)	Northwestern corner of 4th and Elizabeth Sts. 41°19′18″N 73°05′24″W / 41.321667°N 73.090000°W / 41.321667; -73.090000 (Sterling Opera House)	Derby	Amelia Earhart, John L. Sullivan, Harry Houdini, George Burns, Lionel Barrymore, Ethel Barrymore, Red Skelton, and John Philip Sousa appeared on this stage.
170	Stevenson Dam Hydroelectric Plant	More images	September 29, 2000 (#00001073)	CT 34 over the Housatonic River 41°23′03″N 73°10′16″W / 41.384167°N 73.171111°W / 41.384167; -73.171111 (Stevenson Dam Hydroelectric Plant)	Oxford	Dam, bridge, and powerhouse built in 1917 on the Housatonic River; extends into Monroe in Fairfield County.
171	Stick Style House at Stony Creek		December 27, 1972 (#72001322)	32 Prospect Hill 41°15′37″N 72°44′43″W / 41.2604°N 72.7454°W / 41.2604; -72.7454 (Stick Style House at Stony Creek)	Branford	Designed by Henry Austin and built in 1878–80 for William J. Clark, an industrialist, Civil War veteran and state legislator.
172	Stony Creek-Thimble Islands Historic District		December 16, 1988 (#88002844)	Roughly Thimble Islands Rd. between Route 146 and Long Island Sound and the Thimble Islands 41°15′33″N 72°45′18″W / 41.259167°N 72.755°W / 41.259167; -72.755 (Stony Creek-Thimble Islands Historic District)	Branford	19th-century summer resort architecture including Italianate, Greek revival and stick styles (exemplified by the William J. Clark House).
173	Swain-Harrison House		October 10, 1975 (#75001924)	124 W. Main St. 41°16′41″N 72°49′34″W / 41.278056°N 72.826111°W / 41.278056; -72.826111 (Swain-Harrison House)	Branford	1724 saltbox house.
174	Taylor Memorial Library		August 21, 1979 (#79002642)	5 Broad St. 41°13′20″N 73°03′27″W / 41.222222°N 73.0575°W / 41.222222; -73.0575 (Taylor Memorial Library)	Milford	1894 Richardsonian Romanesque.
175	Orrin Todd House		December 26, 1991 (#91001845)	3369 Whitney Ave. 41°25′02″N 72°54′11″W / 41.417222°N 72.903056°W / 41.417222; -72.903056 (Orrin Todd House)	Hamden	Federal structure from about 1800; rescued from demolition in 2017.
176	Tranquility Farm		September 23, 1982 (#82004355)	Tranquility Road 41°31′54″N 73°08′16″W / 41.531667°N 73.137778°W / 41.531667; -73.137778 (Tranquility Farm)	Middlebury	Shingle Style main house designed by McKim, Mead & White with landscape design by Warren H. Manning and Charles Eliot.
177	Bronson B. Tuttle House		November 29, 1990 (#90001803)	380 Church St. 41°29′43″N 73°03′19″W / 41.495278°N 73.055278°W / 41.495278; -73.055278 (Bronson B. Tuttle House)	Naugatuck	Brick Queen Anne mansion from 1879 with projecting gables and porches, a porte-cochère, and a three-story tower.
178	John Tyler House		December 1, 1988 (#88002635)	242-250 E. Main St. 41°17′29″N 72°47′46″W / 41.291362°N 72.796010°W / 41.291362; -72.796010 (John Tyler House)	Branford	Late First Period residence from 1710.
179	Solomon Tyler House		December 1, 1988 (#88002636)	260-268 E. Main St. 41°17′31″N 72°47′41″W / 41.291819°N 72.794731°W / 41.291819; -72.794731 (Solomon Tyler House)	Branford	Circa 1770 Georgian.
180	Union School		November 13, 1987 (#87001899)	174 Center St. 41°16′29″N 72°56′49″W / 41.274722°N 72.946944°W / 41.274722; -72.946944 (Union School)	West Haven	Brick school building from 1890 built in an eclectic Victorian style.
181	Upper Main Street Historic District		December 2, 1982 (#82001004)	36-100 and 85-117 Main St. 41°20′41″N 73°04′47″W / 41.344722°N 73.079722°W / 41.344722; -73.079722 (Upper Main Street Historic District)	Ansonia	Primarily late-19th century brick commercial buildings including High Victorian Italianate and Neo-Classical Revival styles, anchored by the Ansonia Opera House.
182	US Post Office-Ansonia Main		December 12, 1985 (#85003327)	237 Main St. 41°20′35″N 73°04′43″W / 41.343056°N 73.078611°W / 41.343056; -73.078611 (US Post Office-Ansonia Main)	Ansonia	Classical Revival with limestone façade from 1914.
183	US Post Office-Meriden Main	More images	January 21, 1986 (#86000129)	39 N. Colony St. 41°32′41″N 72°48′04″W / 41.544722°N 72.801111°W / 41.544722; -72.801111 (US Post Office-Meriden Main)	Meriden	Former U.S. Post Office, built in 1907 in the Beaux Arts style with fluted Corinthian columns and elaborate cornices.
184	US Post Office-Milford Main		September 25, 1986 (#86002959)	6 W. River St. 41°13′27″N 73°03′30″W / 41.224167°N 73.058333°W / 41.224167; -73.058333 (US Post Office-Milford Main)	Milford	Red brick Classical Revival, trimmed with limestone, from 1931.
185	US Post Office-Naugatuck Main	More images	January 21, 1986 (#86000130)	Church and Cedar Sts. 41°29′32″N 73°03′23″W / 41.492222°N 73.056389°W / 41.492222; -73.056389 (US Post Office-Naugatuck Main)	Naugatuck	Buff-colored brick building with ivory terra cotta ornament, marble accents, decorative brick panels and a hipped red clay tile roof.
186	Wallingford Center Historic District	More images	December 2, 1993 (#93001242)	Roughly Main St. from Ward St. to Church St. 41°27′11″N 72°49′14″W / 41.453056°N 72.820556°W / 41.453056; -72.820556 (Wallingford Center Historic District)	Wallingford	Residential, civic, commercial, and institutional structures primarily from the 18th and 19th-century including colonial, Greek Revival, Italianate, and Queen Anne architecture. The Samuel Parsons House is within the district.
187	Wallingford Railroad Station	More images	November 19, 1993 (#93001245)	51 Quinnipiac St. (37 Hall Ave.) 41°27′24″N 72°49′32″W / 41.456667°N 72.825556°W / 41.456667; -72.825556 (Wallingford Railroad Station)	Wallingford	Former station building in Second Empire style from 1871 with distinctive Mansard roof and decorative brackets.
188	Ward-Heitman House	More images	January 8, 2003 (#02001691)	277 Elm St. 41°16′34″N 72°57′08″W / 41.276111°N 72.952222°W / 41.276111; -72.952222 (Ward-Heitman House)	West Haven	Oldest house in West Haven; now a museum.
189	Washington Avenue Bridge	More images	April 12, 2001 (#01000354)	Washington Ave. over the Mad River 41°32′38″N 73°02′18″W / 41.543889°N 73.038333°W / 41.543889; -73.038333 (Washington Avenue Bridge)	Waterbury	Lenticular pony truss.
190	Washington Bridge	More images	September 29, 2004 (#04001093)	U.S. Route 1 at the Housatonic River 41°12′01″N 73°06′39″W / 41.200278°N 73.110833°W / 41.200278; -73.110833 (Washington Bridge)	Milford	Open-spandrel concrete arch bascule bridge; extends into Stratford in Fairfield County.
191	Waterbury Brass Mill		September 5, 1975 (#75001943)	Idlewood Ave. in Hamilton Park 41°32′26″N 73°01′04″W / 41.540556°N 73.017778°W / 41.540556; -73.017778 (Waterbury Brass Mill)	Waterbury	Site of a large brass mill; now athletic fields.
192	Waterbury Clock Company		November 30, 1982 (#82001005)	N. Elm and Cherry Sts. and Cherry Ave. 41°33′30″N 73°02′06″W / 41.558333°N 73.035°W / 41.558333; -73.035 (Waterbury Clock Company)	Waterbury	Factory complex home, from 1873-1944, to the forerunner of Timex.
193	Waterbury Municipal Center Complex	More images	October 10, 1978 (#78002882)	195, 235, and 236 Grand St. and 7, 35, and 43 Field St. 41°33′13″N 73°02′36″W / 41.5536°N 73.0433°W / 41.5536; -73.0433 (Waterbury Municipal Center Complex)	Waterbury	Cass Gilbert-designed complex from 1910s meant to create one unified complex of city government, corporate headquarters and charitable office in accord with City Beautiful movement principles.
194	Waterbury Union Station	More images	March 8, 1978 (#78002881)	389 Meadow St. 41°33′18″N 73°02′51″W / 41.555°N 73.0475°W / 41.555; -73.0475 (Waterbury Union Station)	Waterbury	1908 station meant to be grand entrance to city being rebuilt after fire; clock tower has become symbol of the city.
195	Webster School		June 14, 1982 (#82004365)	Easton Ave. at Aetna St. 41°34′00″N 73°01′53″W / 41.5667°N 73.0314°W / 41.5667; -73.0314 (Webster School)	Waterbury	Neo-Classical former elementary school built in 1898 from red brick with limestone details and a projecting wooden cornice.
196	West Haven Green Historic District		August 11, 2000 (#00000832)	Roughly along Main St., Campbell St., Church St., and Savin St. 41°16′15″N 72°57′01″W / 41.2708°N 72.9503°W / 41.2708; -72.9503 (West Haven Green Historic District)	West Haven	Historic town green dominated by Congregational Church (1859); surrounding structures include Queen Anne and Italianate styles.
197	West Haven VA Hospital Historic District	Upload image	May 26, 2022 (#100007728)	950 Campbell Ave. 41°17′06″N 72°57′29″W / 41.2849°N 72.9581°W / 41.2849; -72.9581 (West Haven VA Hospital Historic District)	West Haven
198	Adin Wheeler House and Theodore F. Wheeler Wheelwright Shop		July 29, 1993 (#93000661)	125 Quaker Farms Rd. 41°27′37″N 73°09′49″W / 41.4603°N 73.1636°W / 41.4603; -73.1636 (Adin Wheeler House and Theodore F. Wheeler Wheelwright Shop)	Southbury	Fine late 18th-century Georgian colonial and remarkably complete late 19th-century workshop.
199	Wheeler-Beecher House	More images	July 15, 1977 (#77001400)	562 Amity Rd. 41°25′42″N 72°59′44″W / 41.4283°N 72.9956°W / 41.4283; -72.9956 (Wheeler-Beecher House)	Bethany	Federal period house designed by David Hoadley.
200	Henry Whitfield House	More images	September 25, 1997 (#72001327)	248 Old Whitfield St. 41°16′40″N 72°40′31″W / 41.2778°N 72.6753°W / 41.2778; -72.6753 (Henry Whitfield House)	Guilford	The oldest house in Connecticut, built in 1639.
201	Eli Whitney Gun Factory	More images	August 13, 1974 (#74002049)	915-940 Whitney Ave. 41°20′09″N 72°54′38″W / 41.3357°N 72.9106°W / 41.3357; -72.9106 (Eli Whitney Gun Factory)	Hamden	Pioneering factory of the American Industrial Revolution, using water-powered machinery and standardized, interchangeable parts; now a museum.
202	Whitneyville Congregational Church		July 28, 1995 (#95000906)	1247-1253 Whitney Ave. 41°20′48″N 72°54′47″W / 41.3467°N 72.9131°W / 41.3467; -72.9131 (Whitneyville Congregational Church)	Hamden	Greek Revival from 1834.
203	Wilby High School		June 14, 1982 (#82004366)	260 Grove St. 41°33′36″N 73°02′45″W / 41.56°N 73.0458°W / 41.56; -73.0458 (Wilby High School)	Waterbury	Tudor revival from 1920; it served as a school until 1978.
204	Wolcott Green Historic District	More images	March 31, 2000 (#00000297)	Roughly bounding Wolcott Green 41°36′05″N 72°58′33″W / 41.6014°N 72.9758°W / 41.6014; -72.9758 (Wolcott Green Historic District)	Wolcott	Triangular town green and surrounding buildings including the Greek Revival Congregational Church, town hall, and a number of 18th- and 19th-century houses.
205	Harcourt Wood Memorial Library		January 4, 1982 (#82004348)	313 Elizabeth St. 41°19′36″N 73°05′20″W / 41.3267°N 73.0889°W / 41.3267; -73.0889 (Harcourt Wood Memorial Library)	Derby	Colonial Revival building from 1902, funded by Derby's streetcar railway owner.
206	Woodbridge Green Historic District		April 18, 2003 (#03000233)	3, 4, 7, 11 Meetinghouse Ln. and 4 and 10 Newton Rd. 41°21′14″N 73°00′46″W / 41.3539°N 73.0128°W / 41.3539; -73.0128 (Woodbridge Green Historic District)	Woodbridge	Colonial and Classical Revival architecture in the town's historic center.
207	Wooster Sawmill and Gristmill Site		August 17, 2001 (#01000879)	Park Road at Little River[9] 41°24′35″N 73°05′54″W / 41.4097°N 73.0983°W / 41.4097; -73.0983 (Wooster Sawmill and Gristmill Site)	Oxford	The water-powered mill complex at this site operated for over 200 years.