This is a list of the National Register of Historic Places listings in Harford County, Maryland.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Harford County, Maryland, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map.^[1]

There are 80 properties and districts listed on the National Register in the county, including one National Historic Landmark called Sion Hill.^[2]

          This National Park Service list is complete through NPS recent listings posted February 16, 2024.^[3]

Current listings

[4]	Name on the Register[5]	Image	Date listed[6]	Location	City or town	Description
1	James B. Baker House		December 10, 1982 (#82001593)	452 W. Bel Air Ave. 39°30′45″N 76°10′25″W / 39.5125°N 76.173611°W / 39.5125; -76.173611 (James B. Baker House)	Aberdeen
2	Bel Air Armory		September 25, 1985 (#85002667)	N. Main St. 39°32′15″N 76°21′01″W / 39.5375°N 76.350278°W / 39.5375; -76.350278 (Bel Air Armory)	Bel Air
3	Bel Air Courthouse Historic District		July 25, 1985 (#85001617)	Office, Courtland, and Main Sts. 39°32′08″N 76°20′59″W / 39.535556°N 76.349722°W / 39.535556; -76.349722 (Bel Air Courthouse Historic District)	Bel Air
4	Berkley Crossroads Historic District		July 17, 2003 (#03000649)	Berkley Road and Castleton Rd. 39°39′46″N 76°12′19″W / 39.662778°N 76.205278°W / 39.662778; -76.205278 (Berkley Crossroads Historic District)	Darlington
5	Berkley School		July 22, 1988 (#88001011)	Castleton Rd., Maryland Route 623 39°39′29″N 76°12′21″W / 39.658056°N 76.205833°W / 39.658056; -76.205833 (Berkley School)	Darlington
6	Best Endeavor		December 28, 1990 (#90001993)	1612 Calvary Rd. 39°30′12″N 76°15′55″W / 39.503333°N 76.265278°W / 39.503333; -76.265278 (Best Endeavor)	Churchville
7	Bon Air		November 10, 1977 (#77000697)	Laurel Brook Rd. 39°30′28″N 76°25′00″W / 39.507778°N 76.416667°W / 39.507778; -76.416667 (Bon Air)	Fallston
8	Broad Creek Soapstone Quarries		May 12, 1975 (#75000903)	Address Restricted	Whiteford
9	Broom's Bloom		December 19, 1991 (#91001778)	1616 S. Fountain Green Rd. 39°30′44″N 76°17′01″W / 39.512222°N 76.283611°W / 39.512222; -76.283611 (Broom's Bloom)	Bel Air
10	Chestnut Ridge		December 1, 1983 (#83003780)	3850 W. Chapel Rd. 39°33′34″N 76°10′53″W / 39.559444°N 76.181389°W / 39.559444; -76.181389 (Chestnut Ridge)	Aberdeen
11	Church of the Holy Trinity		December 27, 2002 (#02001580)	2929 Level Rd. 39°33′39″N 76°14′48″W / 39.560833°N 76.246667°W / 39.560833; -76.246667 (Church of the Holy Trinity)	Churchville
12	Churchville Presbyterian Church	More images	August 21, 1986 (#86001733)	Intersection of Maryland Routes 22 and 136 39°33′34″N 76°15′10″W / 39.559444°N 76.252778°W / 39.559444; -76.252778 (Churchville Presbyterian Church)	Churchville
13	D. H. Springhouse		May 8, 1973 (#73000923)	About 6 miles (9.7 km) northeast of Bel Air on Sandy Hook Rd. 39°37′17″N 76°18′37″W / 39.621389°N 76.310278°W / 39.621389; -76.310278 (D. H. Springhouse)	Bel Air
14	Darlington Historic District		September 10, 1987 (#87001571)	Main St., Shuresville Rd., Quaker Ln., Richmond Ave., and Trappe Church Rd. 39°38′23″N 76°12′03″W / 39.639722°N 76.200833°W / 39.639722; -76.200833 (Darlington Historic District)	Darlington
15	Deer Creek Friends Meetinghouse		April 23, 1980 (#80001817)	Maryland Route 161 39°38′46″N 76°12′19″W / 39.646111°N 76.205278°W / 39.646111; -76.205278 (Deer Creek Friends Meetinghouse)	Darlington
16	Dibb House		March 18, 1980 (#80001812)	East of Bel Air at 1737 Churchville Rd. 39°32′56″N 76°18′11″W / 39.548889°N 76.303056°W / 39.548889; -76.303056 (Dibb House)	Bel Air
17	Fair Meadows		November 25, 1980 (#80004255)	Creswell Rd. 39°29′57″N 76°15′58″W / 39.499167°N 76.266111°W / 39.499167; -76.266111 (Fair Meadows)	Creswell
18	Finney Houses Historic District		June 16, 1989 (#89000502)	Glenville Rd. near its junction with Maryland Route 155 39°34′20″N 76°14′20″W / 39.572222°N 76.238889°W / 39.572222; -76.238889 (Finney Houses Historic District)	Churchville
19	Gladden Farm		May 28, 1993 (#93000444)	3881 Rocks Station Rd. 39°38′27″N 76°24′22″W / 39.640833°N 76.406111°W / 39.640833; -76.406111 (Gladden Farm)	Street
20	Graham-Crocker House		March 17, 1980 (#80001813)	30 N. Main St. 39°32′12″N 76°21′01″W / 39.536667°N 76.350278°W / 39.536667; -76.350278 (Graham-Crocker House)	Bel Air
21	Gray Gables		March 27, 1986 (#86000582)	4528 Conowingo Rd. 39°39′13″N 76°13′15″W / 39.653611°N 76.220833°W / 39.653611; -76.220833 (Gray Gables)	Darlington
22	Graystone Lodge		August 30, 2007 (#07000858)	1118 Bel Air Rd. 39°30′44″N 76°22′24″W / 39.512222°N 76.373333°W / 39.512222; -76.373333 (Graystone Lodge)	Bel Air
23	Griffith House		November 14, 1978 (#78001465)	Southwest of Aberdeen at 1120 Old Philadelphia Rd. 39°29′18″N 76°11′41″W / 39.488333°N 76.194722°W / 39.488333; -76.194722 (Griffith House)	Aberdeen
24	Gunpowder Meetinghouse		June 5, 1974 (#74000954)	Magnolia Rd. 39°24′13″N 76°18′29″W / 39.403611°N 76.308056°W / 39.403611; -76.308056 (Gunpowder Meetinghouse)	Aberdeen Proving Ground
25	Harford Furnace Historic District		July 18, 1990 (#90001020)	Creswell and Goat Hill Rds. 39°29′36″N 76°15′38″W / 39.493333°N 76.260556°W / 39.493333; -76.260556 (Harford Furnace Historic District)	Bel Air
26	Harford National Bank		March 20, 1980 (#80001814)	Wall and Courtland Sts. 39°32′07″N 76°20′59″W / 39.535278°N 76.349722°W / 39.535278; -76.349722 (Harford National Bank)	Bel Air	Richardsonian Romanesque bank building now replaced by a court building
27	Havre de Grace Historic District		March 25, 1982 (#82002815)	Roughly bounded by Chesapeake Bay, the Susquehanna River, U.S. Route 40, and Stokes, Juniata, and Superior Sts. 39°32′49″N 76°05′29″W / 39.546944°N 76.091389°W / 39.546944; -76.091389 (Havre de Grace Historic District)	Havre de Grace
28	Havre de Grace Lighthouse	More images	April 2, 1976 (#76000999)	Concord and Lafayette Sts. 39°32′26″N 76°05′07″W / 39.540556°N 76.085278°W / 39.540556; -76.085278 (Havre de Grace Lighthouse)	Havre de Grace
29	Hays House		January 3, 1980 (#80001815)	324 S. Kenmore Ave. 39°31′57″N 76°20′52″W / 39.5325°N 76.347778°W / 39.5325; -76.347778 (Hays House)	Bel Air
30	Hays-Heighe House		February 11, 1972 (#72000581)	401 Thomas Run Rd. 39°33′37″N 76°17′00″W / 39.560278°N 76.283333°W / 39.560278; -76.283333 (Hays-Heighe House)	Bel Air
31	Heighe House		November 1, 1990 (#90001568)	Junction of Southampton and Moores Mill Rds. 39°33′00″N 76°20′17″W / 39.55°N 76.338056°W / 39.55; -76.338056 (Heighe House)	Bel Air
32	Hidden Valley Farm		January 17, 1983 (#83002950)	2916 Green Rd. 39°31′35″N 76°29′59″W / 39.526389°N 76.499722°W / 39.526389; -76.499722 (Hidden Valley Farm)	Baldwin
33	Hirsch Residence		February 2, 2023 (#100008592)	605 Giles St. 39°32′23″N 76°05′39″W / 39.5396°N 76.0941°W / 39.5396; -76.0941 (Hirsch Residence)	Havre de Grace
34	Husband Flint Mill Site		June 18, 1975 (#75000902)	Address Restricted	Kalmia
35	Ivory Mills		August 29, 1997 (#97000968)	4916 Harford Creamery Rd. 39°40′28″N 76°32′15″W / 39.674444°N 76.5375°W / 39.674444; -76.5375 (Ivory Mills)	White Hall
36	Jericho Covered Bridge	More images	September 13, 1978 (#78001444)	East of Kingsville on Jericho Rd. 39°27′34″N 76°23′16″W / 39.459444°N 76.387778°W / 39.459444; -76.387778 (Jericho Covered Bridge)	Jerusalem
37	Jerusalem Mill Village		August 20, 1987 (#87001400)	Jerusalem and Jericho Rds. 39°27′41″N 76°23′23″W / 39.461389°N 76.389722°W / 39.461389; -76.389722 (Jerusalem Mill Village)	Jerusalem
38	Joshua's Meadows		December 21, 1982 (#82001594)	300 N. Tollgate Rd. 39°31′18″N 76°21′54″W / 39.521667°N 76.365°W / 39.521667; -76.365 (Joshua's Meadows)	Bel Air
39	Ladew Topiary Gardens and House		May 13, 1976 (#76001002)	3535 Jarrettsville Pike (Maryland Route 146) 39°34′52″N 76°30′44″W / 39.581111°N 76.512222°W / 39.581111; -76.512222 (Ladew Topiary Gardens and House)	Taylor	Historic home and 1930s topiary gardens on a 250-acre (1.0 km2) estate.
40	Liriodendron		September 27, 1980 (#80001816)	501 and 502 W. Gordon St. 39°32′01″N 76°21′40″W / 39.533611°N 76.361111°W / 39.533611; -76.361111 (Liriodendron)	Bel Air
41	Little Falls Meetinghouse		May 7, 1980 (#80001818)	Old Fallston Rd. 39°30′33″N 76°24′23″W / 39.509167°N 76.406389°W / 39.509167; -76.406389 (Little Falls Meetinghouse)	Fallston
42	Lower Deer Creek Valley Historic District		November 3, 1993 (#93001143)	Roughly bounded by the Susquehanna River, Maryland Route 543, and Harmony, Church, and Trappe Rds. 39°36′43″N 76°14′05″W / 39.611944°N 76.234722°W / 39.611944; -76.234722 (Lower Deer Creek Valley Historic District)	Darlington
43	MARTHA LEWIS (skipjack)	Upload image	December 11, 2008 (#08001175)	Millard Tydings Memorial Park, Commerce St. at S. Strawberry La. 39°32′18″N 76°05′25″W / 39.53839°N 76.09023°W / 39.53839; -76.09023 (MARTHA LEWIS (skipjack))	Havre de Grace	Chesapeake Bay Skipjack Fleet TR
44	McComas Institute	More images	September 8, 1980 (#80001819)	North of Joppa on Singer Rd. 39°28′02″N 76°21′30″W / 39.467222°N 76.358333°W / 39.467222; -76.358333 (McComas Institute)	Joppa
45	Medical Hall Historic District		August 28, 1973 (#73000926)	West of Churchville off Maryland Route 154 39°34′24″N 76°16′20″W / 39.573333°N 76.272222°W / 39.573333; -76.272222 (Medical Hall Historic District)	Churchville
46	Mill Green Historic District		June 3, 1993 (#93000445)	Junction of Mill Green and Prospect Rds. 39°39′50″N 76°19′34″W / 39.663889°N 76.326111°W / 39.663889; -76.326111 (Mill Green Historic District)	Street
47	Mount Adams		October 27, 1988 (#88002062)	1912 Fountain Green Rd. 39°30′27″N 76°16′52″W / 39.5075°N 76.281111°W / 39.5075; -76.281111 (Mount Adams)	Bel Air
48	My Lady's Manor	More images	April 15, 1978 (#78001445)	Maryland Route 138 39°35′15″N 76°34′16″W / 39.5875°N 76.571111°W / 39.5875; -76.571111 (My Lady's Manor)	Jarrettsville
49	Nelson-Reardon-Kennard House		April 15, 1991 (#91000001)	3604 Philadelphia Rd. 39°27′51″N 76°16′45″W / 39.464167°N 76.279167°W / 39.464167; -76.279167 (Nelson-Reardon-Kennard House)	Abingdon
50	Norris-Stirling House		May 30, 1979 (#79001135)	Ring Factory Rd. 39°29′26″N 76°21′31″W / 39.490556°N 76.358611°W / 39.490556; -76.358611 (Norris-Stirling House)	Bel Air
51	Odd Fellows Lodge		August 22, 1975 (#75000901)	21 Pennsylvania Ave. 39°32′13″N 76°20′56″W / 39.536944°N 76.348889°W / 39.536944; -76.348889 (Odd Fellows Lodge)	Bel Air
52	Old Joppa Site		August 24, 1979 (#79001136)	Address Restricted	Joppatowne
53	Olney		July 9, 1987 (#87001197)	1001 Old Joppa Rd. 39°28′39″N 76°22′11″W / 39.4775°N 76.369722°W / 39.4775; -76.369722 (Olney)	Joppa
54	Pooles Island Lighthouse	More images	February 19, 1997 (#97000060)	Northwestern portion of Poole's Island and southeast of Rickett Point at Aberdeen Proving Ground 39°17′26″N 76°15′59″W / 39.2905°N 76.2664°W / 39.2905; -76.2664 (Pooles Island Lighthouse)	Edgewood
55	Poplar Hill		May 28, 1976 (#76000998)	115 Poplar Hill Rd. 39°29′46″N 76°10′17″W / 39.496111°N 76.171389°W / 39.496111; -76.171389 (Poplar Hill)	Aberdeen
56	Presbury Meetinghouse	More images	May 23, 1974 (#74000955)	Austin and Parrish Rds. 39°23′15″N 76°18′24″W / 39.3875°N 76.306667°W / 39.3875; -76.306667 (Presbury Meetinghouse)	Aberdeen Proving Ground
57	Priest Neal's Mass House and Mill Site		March 15, 1990 (#90000352)	2618 Cool Spring Rd. 39°35′55″N 76°15′33″W / 39.598611°N 76.259167°W / 39.598611; -76.259167 (Priest Neal's Mass House and Mill Site)	Bel Air
58	Proctor House		March 23, 1990 (#90000376)	54 E. Gordon St. 39°32′24″N 76°21′06″W / 39.54°N 76.351667°W / 39.54; -76.351667 (Proctor House)	Bel Air
59	Rigbie House		August 14, 1973 (#73000925)	Southeast of Berkley off Maryland Route 623 39°39′37″N 76°12′12″W / 39.660278°N 76.203333°W / 39.660278; -76.203333 (Rigbie House)	Berkley
60	Rockdale		June 30, 1982 (#82002814)	North of Fallston at 1724 Carrs Mill Rd. 39°32′03″N 76°24′19″W / 39.534167°N 76.405278°W / 39.534167; -76.405278 (Rockdale)	Fallston
61	St. George's Parish Vestry House		March 26, 1976 (#76001001)	1522 Perryman Rd. 39°28′27″N 76°12′16″W / 39.474167°N 76.204444°W / 39.474167; -76.204444 (St. George's Parish Vestry House)	Perryman
62	St. Ignatius Church	More images	April 16, 1974 (#74000956)	533 E. Jarrettsville Rd. 39°34′25″N 76°21′19″W / 39.573611°N 76.355278°W / 39.573611; -76.355278 (St. Ignatius Church)	Forest Hill
63	St. Mary's Church	More images	March 30, 1973 (#73000928)	South of Emmorton on Maryland Route 24 39°29′16″N 76°19′04″W / 39.487778°N 76.317778°W / 39.487778; -76.317778 (St. Mary's Church)	Emmorton
64	Silver Houses Historic District		September 7, 1984 (#84001800)	South of Darlington on Maryland Route 161 39°36′22″N 76°11′47″W / 39.606111°N 76.196389°W / 39.606111; -76.196389 (Silver Houses Historic District)	Darlington
65	Sion Hill	More images	April 30, 1990 (#90000608)	2026 Level Rd. 39°33′42″N 76°07′32″W / 39.561667°N 76.125556°W / 39.561667; -76.125556 (Sion Hill)	Havre de Grace	Historic home of U.S. Navy officers including Commodore John Rodgers.
66	Slate Ridge School		July 16, 1987 (#87000657)	Old Pylesville Rd. 39°42′45″N 76°20′25″W / 39.7125°N 76.340278°W / 39.7125; -76.340278 (Slate Ridge School)	Whiteford
67	Sophia's Dairy		September 20, 1973 (#73000922)	Southwest of Aberdeen off U.S. Route 40 39°28′24″N 76°14′03″W / 39.473333°N 76.234167°W / 39.473333; -76.234167 (Sophia's Dairy)	Aberdeen
68	Southern Terminal, Susquehanna and Tidewater Canal		May 28, 1976 (#76001000)	North of Erie St. between Conesteo St. and the Susquehanna River 39°33′24″N 76°05′41″W / 39.556667°N 76.094722°W / 39.556667; -76.094722 (Southern Terminal, Susquehanna and Tidewater Canal)	Havre de Grace
69	Col. John Streett House		July 16, 1990 (#90001022)	Northern side of Holy Cross Rd. east of Deer Creek 39°39′27″N 76°26′04″W / 39.6575°N 76.434444°W / 39.6575; -76.434444 (Col. John Streett House)	Street
70	Swansbury		July 15, 1994 (#94000730)	Beard's Hill Rd. Extended, northeast of Aberdeen 39°31′18″N 76°09′11″W / 39.521667°N 76.153056°W / 39.521667; -76.153056 (Swansbury)	Aberdeen
71	Thomas Run Church	More images	January 3, 1978 (#78001466)	Northeast of Bel Air off Maryland Route 136 39°35′32″N 76°17′34″W / 39.592222°N 76.292778°W / 39.592222; -76.292778 (Thomas Run Church)	Bel Air
72	Tudor Hall	More images	March 14, 1973 (#73000924)	Northeast of Bel Air off Maryland Route 22 39°33′15″N 76°18′11″W / 39.554167°N 76.303056°W / 39.554167; -76.303056 (Tudor Hall)	Bel Air
73	The Vineyard		July 22, 1994 (#94000762)	1201 Conowingo Rd. (U.S. Route 1) 39°33′56″N 76°20′34″W / 39.565556°N 76.342778°W / 39.565556; -76.342778 (The Vineyard)	Bel Air
74	Webster's Forest		September 1, 1983 (#83002951)	500 Asbury Rd. 39°32′32″N 76°15′51″W / 39.542222°N 76.264167°W / 39.542222; -76.264167 (Webster's Forest)	Churchville
75	Whitaker's Mill Historic District		July 16, 1990 (#90001021)	1210, 1212, and 1213 Whitaker Mill Rd. 39°29′51″N 76°21′15″W / 39.4975°N 76.354167°W / 39.4975; -76.354167 (Whitaker's Mill Historic District)	Joppa
76	Whiteford-Cardiff Historic District		November 15, 2005 (#05001278)	Whiteford Rd., Platted Parry St., Quarry Rd., west of Main St.; split between Maryland and Pennsylvania 39°42′56″N 76°20′19″W / 39.715556°N 76.338611°W / 39.715556; -76.338611 (Whiteford-Cardiff Historic District)	Whiteford
77	Wildfell		September 20, 1973 (#73000927)	Northwest of Darlington on U.S. Route 1 39°39′04″N 76°13′11″W / 39.651111°N 76.219722°W / 39.651111; -76.219722 (Wildfell)	Darlington
78	Winsted		September 19, 1979 (#79003266)	North of Aberdeen at 3844 W. Chapel Rd. 39°33′36″N 76°10′54″W / 39.56°N 76.181667°W / 39.56; -76.181667 (Winsted)	Aberdeen
79	Woodside		November 1, 1979 (#79001134)	Northwest of Abingdon at 400 Singer Rd 39°28′47″N 76°19′22″W / 39.479722°N 76.322778°W / 39.479722; -76.322778 (Woodside)	Abingdon
80	Woodview		October 25, 1990 (#90001574)	1236 Somerville Rd. 39°29′47″N 76°20′56″W / 39.496389°N 76.348889°W / 39.496389; -76.348889 (Woodview)	Bel Air