This is a list of the National Register of Historic Places listings in Boulder County, Colorado.

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

There are 88 properties and districts listed on the National Register in the county, including 1 National Historic Landmark. Another two properties were once listed but have been removed.

          This National Park Service list is complete through NPS recent listings posted January 19, 2024.^[2]

Current listings

[3]	Name on the Register[4]	Image	Date listed[5]	Location	City or town	Description
1	Arnett-Fullen House	More images	January 29, 2009 (#08001376)	646 Pearl St. 40°00′58″N 105°17′12″W / 40.0162°N 105.2867°W / 40.0162; -105.2867 (Arnett-Fullen House)	Boulder	Commonly referred to as the Gingerbread House.
2	Hannah Barker House		September 12, 2019 (#100004376)	800 Arapahoe Ave. 40°00′46″N 105°17′05″W / 40.0129°N 105.2847°W / 40.0129; -105.2847 (Hannah Barker House)	Boulder
3	Boulder County Poor Farm		September 13, 2001 (#01000969)	63rd St. near its junction with Jay Rd.[6] 40°02′44″N 105°12′23″W / 40.0456°N 105.2063°W / 40.0456; -105.2063 (Boulder County Poor Farm)	Boulder
4	Boulder Creek Bridge	More images	March 11, 2003 (#03000103)	State Highway 119 at milepost 39.13 40°00′53″N 105°19′16″W / 40.01476°N 105.32100°W / 40.01476; -105.32100 (Boulder Creek Bridge)	Boulder	Concrete slab and beam bridge built in 1953, one of first in state having parabolically arched beams rather than flat ones.
5	Boulder Valley Grange No. 131		December 7, 1987 (#87002009)	3400 N. 95th St. 40°02′13″N 105°07′48″W / 40.0369°N 105.1300°W / 40.0369; -105.1300 (Boulder Valley Grange No. 131)	Lafayette
6	Buchan Cabin	Upload image	September 3, 2020 (#100005521)	2386 Cty. Rd. 111 39°58′02″N 105°36′09″W / 39.9671°N 105.6025°W / 39.9671; -105.6025 (Buchan Cabin)	Eldora vicinity
7	Bunce School		May 22, 1986 (#86001109)	State Highway 7 south of Allenspark 40°10′23″N 105°28′09″W / 40.17292°N 105.46905°W / 40.17292; -105.46905 (Bunce School)	Allenspark	Log one-room schoolhouse built in 1888.
8	T.M. Callahan House		May 16, 1985 (#85001064)	312 Terry St. 40°09′52″N 105°06′17″W / 40.16450°N 105.10481°W / 40.16450; -105.10481 (T.M. Callahan House)	Longmont	1892-built Queen Anne-style brick house
9	Cardinal Mill		December 22, 2011 (#11000945)	Along Coon Track Creek at Cardinal[7] 39°58′08″N 105°33′00″W / 39.9689°N 105.5500°W / 39.9689; -105.5500 (Cardinal Mill)	Nederland
10	Carnegie Library		February 16, 1979 (#79000573)	1125 Pine St. 40°01′12″N 105°16′52″W / 40.0200°N 105.2811°W / 40.0200; -105.2811 (Carnegie Library)	Boulder
11	Chautauqua Auditorium		January 21, 1974 (#74000562)	Chautauqua Park 39°59′51″N 105°16′47″W / 39.9975°N 105.2797°W / 39.9975; -105.2797 (Chautauqua Auditorium)	Boulder
12	Church of the Brethren		January 5, 1984 (#84000794)	17th Ave. 40°11′19″N 105°10′06″W / 40.1886°N 105.1683°W / 40.1886; -105.1683 (Church of the Brethren)	Hygiene
13	Colorado Chautauqua	More images	March 21, 1978 (#78000830)	900 Baseline Rd., Chautauqua Park 39°59′52″N 105°16′50″W / 39.9978°N 105.2806°W / 39.9978; -105.2806 (Colorado Chautauqua)	Boulder
14	Columbia Cemetery	More images	August 1, 1997 (#97000792)	Along 9th St., bounded by Pleasant and College Aves. 40°00′30″N 105°16′58″W / 40.0083°N 105.2828°W / 40.0083; -105.2828 (Columbia Cemetery)	Boulder
15	Congregational Church	More images	May 20, 1983 (#83001298)	300 E. Simpson St. 39°59′53″N 105°05′15″W / 39.9981°N 105.0875°W / 39.9981; -105.0875 (Congregational Church)	Lafayette
16	Denver Elevator-Grain Elevator		February 14, 1986 (#86000212)	Tract 712 near State Highway 42 39°58′36″N 105°07′45″W / 39.9767°N 105.1292°W / 39.9767; -105.1292 (Denver Elevator-Grain Elevator)	Louisville	Commonly referred to as Louisville Grain Elevator[8][9]
17	Denver, Boulder and Western Railway Historic District		September 18, 1980 (#80000882)	State Highway 72 40°00′27″N 105°29′58″W / 40.0075°N 105.4994°W / 40.0075; -105.4994 (Denver, Boulder and Western Railway Historic District)	Ward	Also known as the Switzerland Trail.
18	Denver, Northwestern and Pacific Railway Historic District		September 30, 1980 (#80000881)	Southwest of Eldora 39°54′52″N 105°41′10″W / 39.9144°N 105.6861°W / 39.9144; -105.6861 (Denver, Northwestern and Pacific Railway Historic District)	Eldora	Historic railroad route over Rollins Pass; extends into Gilpin and Grand counties.
19	Dickens Opera House		July 28, 1987 (#87000702)	300 Main St. 40°09′52″N 105°06′06″W / 40.1644°N 105.1017°W / 40.1644; -105.1017 (Dickens Opera House)	Longmont
20	Downtown Boulder Historic District	More images	December 3, 1980 (#80000878)	State Highway 119 40°01′07″N 105°16′43″W / 40.0186°N 105.2786°W / 40.0186; -105.2786 (Downtown Boulder Historic District)	Boulder
21	Downtown Longmont Historic District	More images	August 28, 2017 (#100001501)	Roughly Main, Coffman & Kimbark Sts. between 3rd & 5th Aves. 40°09′57″N 105°06′09″W / 40.1657°N 105.1025°W / 40.1657; -105.1025 (Downtown Longmont Historic District)	Longmont
22	East Longs Peak Trail	More images	July 10, 2007 (#07000740)	West of State Highway 7[10] 40°16′20″N 105°36′02″W / 40.2722°N 105.6006°W / 40.2722; -105.6006 (East Longs Peak Trail)	Allenspark	Extends into Larimer County.
23	East Side Historic District	More images	October 2, 1986 (#86002812)	Roughly bounded by Long's Peak Ave., Collyer St., Fourth Ave., and Emery St. 40°10′00″N 105°05′56″W / 40.166667°N 105.098889°W / 40.166667; -105.098889 (East Side Historic District)	Longmont
24	Eldora Historic District		October 4, 1989 (#89000978)	Roughly Eaton Pl., 6th, Pearl, and 4th Sts., Huron Ave., 6th St., Eldorado Ave., and 7th St., Klondyke Ave., and 10th St. 39°57′01″N 105°34′17″W / 39.950278°N 105.571389°W / 39.950278; -105.571389 (Eldora Historic District)	Eldora
25	Empson Cannery	More images	January 5, 1984 (#84000796)	15 3rd Ave. 40°09′49″N 105°05′37″W / 40.163611°N 105.093611°W / 40.163611; -105.093611 (Empson Cannery)	Longmont
26	First Baptist Church of Boulder		April 14, 2004 (#04000275)	1237 Pine St. 40°01′13″N 105°16′45″W / 40.020278°N 105.279167°W / 40.020278; -105.279167 (First Baptist Church of Boulder)	Boulder
27	First Congregational Church of Lyons		December 12, 1976 (#76000547)	High and 4th Sts. 40°13′33″N 105°16′11″W / 40.225833°N 105.269722°W / 40.225833; -105.269722 (First Congregational Church of Lyons)	Lyons
28	Fox Mine Office	More images	February 23, 1996 (#96000168)	1226 S. Cherryvale Rd. 39°58′06″N 105°12′51″W / 39.968333°N 105.214167°W / 39.968333; -105.214167 (Fox Mine Office)	Boulder
29	Fox Stone Barn	More images	February 16, 1996 (#96000070)	S. Cherryvale Rd., 0.5 miles south of U.S. Highway 36 39°58′10″N 105°12′46″W / 39.969444°N 105.212778°W / 39.969444; -105.212778 (Fox Stone Barn)	Boulder
30	Ginacci House		February 14, 1986 (#86000213)	1116 LaFarge St. 39°58′52″N 105°07′57″W / 39.981111°N 105.132500°W / 39.981111; -105.132500 (Ginacci House)	Louisville
31	Gold Hill Historic District	More images	August 3, 1989 (#89000979)	Roughly bounded by North St., Pine St., Boulder St., Gold Run St., and College St. 40°03′43″N 105°24′26″W / 40.061944°N 105.407222°W / 40.061944; -105.407222 (Gold Hill Historic District)	Gold Hill
32	Gold Miner Hotel		July 3, 1997 (#97000657)	601 Klondyke Ave. 39°57′01″N 105°34′10″W / 39.950278°N 105.569444°W / 39.950278; -105.569444 (Gold Miner Hotel)	Eldora
33	Highland School		December 18, 1978 (#78000831)	885 Arapahoe Ave. 40°00′48″N 105°17′01″W / 40.013333°N 105.283611°W / 40.013333; -105.283611 (Highland School)	Boulder
34	David Hull Holmes House		December 3, 2018 (#100003225)	720 11th St. 40°00′01″N 105°16′43″W / 40.0004°N 105.2786°W / 40.0004; -105.2786 (David Hull Holmes House)	Boulder
35	Hotel Boulderado	More images	November 3, 1994 (#94001226)	2115 13th St. 40°01′09″N 105°16′43″W / 40.019167°N 105.278611°W / 40.019167; -105.278611 (Hotel Boulderado)	Boulder
36	Hoverhome and Hover Farmstead		January 15, 1999 (#98001555)	1303-1309 Hover Rd. 40°10′55″N 105°07′53″W / 40.181944°N 105.131389°W / 40.181944; -105.131389 (Hoverhome and Hover Farmstead)	Longmont
37	Jacoe Store		February 14, 1986 (#86000215)	1001 Main St. 39°58′47″N 105°07′53″W / 39.979722°N 105.131389°W / 39.979722; -105.131389 (Jacoe Store)	Louisville
38	Jamestown Mercantile Building		August 3, 1989 (#89000985)	Main St. 40°06′57″N 105°23′18″W / 40.115833°N 105.388333°W / 40.115833; -105.388333 (Jamestown Mercantile Building)	Jamestown
39	Jamestown Town Hall		July 10, 2003 (#03000615)	118 Main St. 40°06′58″N 105°23′15″W / 40.116111°N 105.387500°W / 40.116111; -105.387500 (Jamestown Town Hall)	Jamestown
40	Kullgren House		May 20, 1983 (#83001299)	209 E. Cleveland St. 39°59′51″N 105°05′17″W / 39.997500°N 105.088056°W / 39.997500; -105.088056 (Kullgren House)	Lafayette
41	Lackner's Tavern		February 14, 1986 (#86000220)	1006 Pine 39°58′31″N 105°07′45″W / 39.975278°N 105.129167°W / 39.975278; -105.129167 (Lackner's Tavern)	Louisville
42	Lafayette House		May 20, 1983 (#83001300)	600 E. Simpson St. 39°59′53″N 105°05′01″W / 39.998056°N 105.083611°W / 39.998056; -105.083611 (Lafayette House)	Lafayette
43	LaSalla House		February 14, 1986 (#86000217)	1124 Main St. 39°58′53″N 105°07′52″W / 39.981389°N 105.131111°W / 39.981389; -105.131111 (LaSalla House)	Louisville
44	Lewis House		May 20, 1983 (#83001301)	108 E. Simpson St. 39°59′53″N 105°05′21″W / 39.998056°N 105.089167°W / 39.998056; -105.089167 (Lewis House)	Lafayette
45	Little Church in the Pines		August 3, 1989 (#89000983)	414 Gold Run Rd. 40°03′12″N 105°22′33″W / 40.053333°N 105.375833°W / 40.053333; -105.375833 (Little Church in the Pines)	Salina
46	Longhurst Lodge	Upload image	September 18, 2017 (#100001606)	State Highway 7 and County Road 82, Arapaho-Roosevelt National Forest and Pawnee National Grassland 40°15′33″N 105°32′13″W / 40.259037°N 105.536854°W / 40.259037; -105.536854 (Longhurst Lodge)	Allenspark
47	Longmont Carnegie Library	More images	November 3, 1992 (#92001406)	457 4th Ave. 40°09′56″N 105°06′01″W / 40.165556°N 105.100278°W / 40.165556; -105.100278 (Longmont Carnegie Library)	Longmont
48	Longmont College		August 12, 1987 (#87001285)	546 Atwood St. 40°10′08″N 105°05′45″W / 40.168889°N 105.095833°W / 40.168889; -105.095833 (Longmont College)	Longmont
49	Longmont Fire Department	More images	May 16, 1985 (#85001063)	667 4th Ave. 40°09′56″N 105°06′10″W / 40.165556°N 105.102778°W / 40.165556; -105.102778 (Longmont Fire Department)	Longmont
50	Longmont Power Plant	Upload image	September 10, 1987 (#87001553)	Old Apple Valley Rd. 40°14′01″N 105°17′38″W / 40.233611°N 105.293889°W / 40.233611; -105.293889 (Longmont Power Plant)	Lyons
51	Lyons Railroad Depot		December 2, 1974 (#74000563)	400 block of Broadway 40°13′27″N 105°16′14″W / 40.224167°N 105.270556°W / 40.224167; -105.270556 (Lyons Railroad Depot)	Lyons
52	Lyons Sandstone Buildings		April 29, 1980 (#80000880)	U.S. Highway 36 and State Highway 7 40°13′05″N 105°15′16″W / 40.218056°N 105.254444°W / 40.218056; -105.254444 (Lyons Sandstone Buildings)	Lyons
53	McKenzie Well	More images	January 26, 2005 (#04001553)	Near Independence Rd. and State Highway 119 40°02′36″N 105°14′27″W / 40.043333°N 105.240833°W / 40.043333; -105.240833 (McKenzie Well)	Boulder
54	Miller House		May 20, 1983 (#83001291)	409 E. Cleveland St. 39°59′51″N 105°05′08″W / 39.997500°N 105.085556°W / 39.997500; -105.085556 (Miller House)	Lafayette
55	Modoc Mill	Upload image	December 27, 1978 (#78000833)	North of Ward 40°04′50″N 105°30′39″W / 40.080556°N 105.510833°W / 40.080556; -105.510833 (Modoc Mill)	Ward
56	Mount St. Gertrude Academy		November 3, 1994 (#94001227)	970 Aurora St. 40°00′13″N 105°16′51″W / 40.003611°N 105.280833°W / 40.003611; -105.280833 (Mount St. Gertrude Academy)	Boulder
57	National Fuel Company Store		February 14, 1986 (#86000222)	801 Main St. 39°58′09″N 105°07′53″W / 39.969167°N 105.131389°W / 39.969167; -105.131389 (National Fuel Company Store)	Louisville
58	Norlin Quadrangle Historic District		March 27, 1980 (#80000879)	University of Colorado campus 40°00′32″N 105°16′20″W / 40.008889°N 105.272222°W / 40.008889; -105.272222 (Norlin Quadrangle Historic District)	Boulder
59	North St. Vrain Creek Bridge		October 15, 2002 (#02001159)	State Highway 7 at milepost 32.98, over the North St. Vrain Creek 40°13′22″N 105°16′18″W / 40.22273°N 105.27167°W / 40.22273; -105.27167 (North St. Vrain Creek Bridge)	Lyons	Single-span bridge built in 1955
60	Northern Colorado Power Company Substation		May 22, 1986 (#86001108)	1590 Broadway 40°00′40″N 105°16′36″W / 40.011111°N 105.276667°W / 40.011111; -105.276667 (Northern Colorado Power Company Substation)	Boulder
61	Petrelli-DelPizzo House		February 14, 1986 (#86000224)	1016 Main St. 39°58′48″N 105°07′52″W / 39.980000°N 105.131111°W / 39.980000; -105.131111 (Petrelli-DelPizzo House)	Louisville
62	Rhoades House		February 14, 1986 (#86000226)	1024 Grant 39°58′49″N 105°08′06″W / 39.980278°N 105.135000°W / 39.980278; -105.135000 (Rhoades House)	Louisville
63	Robinson House		February 14, 1986 (#86000228)	301 Spruce 39°58′41″N 105°08′20″W / 39.97798°N 105.13893°W / 39.97798; -105.13893 (Robinson House)	Louisville	House built in 1904
64	Rock Creek Farm Rural Historic District	More images	April 20, 2023 (#100007966)	2005 South 112th St. 39°57′01″N 105°05′35″W / 39.9504°N 105.0930°W / 39.9504; -105.0930 (Rock Creek Farm Rural Historic District)	Broomfield vicinity
65	Rocky Mountain Mammoth Mine		July 6, 2010 (#10000422)	4879 Magnolia Dr. 39°59′08″N 105°24′01″W / 39.985556°N 105.400278°W / 39.985556; -105.400278 (Rocky Mountain Mammoth Mine)	Nederland
66	St. Stephen's Episcopal Church, 1881		February 24, 1975 (#75000501)	470 Main St. 40°10′03″N 105°06′06″W / 40.167500°N 105.101667°W / 40.167500; -105.101667 (St. Stephen's Episcopal Church, 1881)	Longmont
67	Salina School		August 3, 1989 (#89000984)	536 Gold Run Rd. 40°03′15″N 105°22′37″W / 40.054167°N 105.376944°W / 40.054167; -105.376944 (Salina School)	Salina
68	Sandbeach Lake Trail	Upload image	January 29, 2008 (#07001471)	South of Lookout Mountain 40°13′14″N 105°32′12″W / 40.220556°N 105.536667°W / 40.220556; -105.536667 (Sandbeach Lake Trail)	Meeker Park
69	Shannon Farm		October 17, 2003 (#03001047)	1341 N. 95th St. 40°00′39″N 105°07′51″W / 40.010833°N 105.130833°W / 40.010833; -105.130833 (Shannon Farm)	Lafayette
70	Squires-Tourtellot House		August 10, 1978 (#78000832)	1019 Spruce St. 40°01′07″N 105°16′55″W / 40.018611°N 105.281944°W / 40.018611; -105.281944 (Squires-Tourtellot House)	Boulder
71	Stolmes House		February 14, 1986 (#86000229)	616 Front St. 39°58′35″N 105°07′47″W / 39.976389°N 105.129722°W / 39.976389; -105.129722 (Stolmes House)	Louisville
72	Sunshine School		July 27, 1989 (#89000982)	355 County Road 83 40°03′42″N 105°21′54″W / 40.061529°N 105.364986°W / 40.061529; -105.364986 (Sunshine School)	Sunshine
73	Swedish Evangelical Lutheran Church of Ryssby	More images	February 16, 1984 (#84000797)	N. 63rd St. 40°08′23″N 105°12′20″W / 40.139700°N 105.205600°W / 40.139700; -105.205600 (Swedish Evangelical Lutheran Church of Ryssby)	Boulder
74	Tego Brothers Drugstore-State National Bank of Louisville		February 14, 1986 (#86000230)	700 Main St. 39°58′37″N 105°07′51″W / 39.976944°N 105.130833°W / 39.976944; -105.130833 (Tego Brothers Drugstore-State National Bank of Louisville)	Louisville
75	The Terrace		November 3, 1987 (#87001287)	207 E. Cleveland St. 39°59′54″N 105°05′17″W / 39.998333°N 105.088056°W / 39.998333; -105.088056 (The Terrace)	Lafayette
76	Thomas House		February 14, 1986 (#86000231)	700 Lincoln 39°58′40″N 105°08′09″W / 39.977778°N 105.135833°W / 39.977778; -105.135833 (Thomas House)	Louisville
77	Thunder Lake Patrol Cabin	More images	January 29, 1988 (#87001124)	Thunder Lake 40°13′20″N 105°38′39″W / 40.222222°N 105.644167°W / 40.222222; -105.644167 (Thunder Lake Patrol Cabin)	Estes Park	In Rocky Mountain National Park
78	Thunder Lake Trail-Bluebird Lake Trail	Upload image	January 29, 2008 (#07001472)	Roughly along the North St. Vrain Creek, west of Wild Basin Ranger Station 40°11′34″N 105°39′07″W / 40.192778°N 105.651944°W / 40.192778; -105.651944 (Thunder Lake Trail-Bluebird Lake Trail)	Allenspark
79	US Post Office-Boulder Main		January 22, 1986 (#86000164)	1905 15th St. 40°01′42″N 105°16′31″W / 40.028333°N 105.275278°W / 40.028333; -105.275278 (US Post Office-Boulder Main)	Boulder
80	Walker Ranch Historic District		June 14, 1984 (#84000798)	West of Boulder; also 7.5 miles west of Boulder off Flagstaff Rd. 39°57′14″N 105°20′03″W / 39.953889°N 105.334167°W / 39.953889; -105.334167 (Walker Ranch Historic District)	Boulder	Second location represents a boundary increase
81	Wall Street Assay Office	More images	August 3, 1989 (#89000986)	6352 Four Mile Canyon Dr. 40°02′24″N 105°23′21″W / 40.040000°N 105.389167°W / 40.040000; -105.389167 (Wall Street Assay Office)	Wallstreet	Assay Office for the Storm King Mine located in Wall Street, CO
82	Ward Congregational Church		August 3, 1989 (#89000981)	41 Modoc 40°04′22″N 105°30′29″W / 40.072778°N 105.508056°W / 40.072778; -105.508056 (Ward Congregational Church)	Ward
83	Ward School		August 3, 1989 (#89000980)	66 Columbia 40°04′18″N 105°30′30″W / 40.07171°N 105.50832°W / 40.07171; -105.50832 (Ward School)	Ward	School built in 1898, now a post office
84	Martha Weiser House		October 16, 2013 (#13000825)	4020 N. 75th St. 40°03′11″N 105°10′42″W / 40.052946°N 105.178256°W / 40.052946; -105.178256 (Martha Weiser House)	Boulder
85	West Side Historic District		January 7, 1987 (#86002846)	Roughly bounded by 5th, Terry, 3rd, and Grant 40°09′57″N 105°06′32″W / 40.165833°N 105.108889°W / 40.165833; -105.108889 (West Side Historic District)	Longmont
86	Wild Basin House	More images	January 29, 1988 (#87001125)	Wild Basin 40°12′29″N 105°33′56″W / 40.208056°N 105.565556°W / 40.208056; -105.565556 (Wild Basin House)	Estes Park
87	Wild Basin Ranger Station and House	More images	January 29, 1988 (#87001126)	Wild Basin 40°12′32″N 105°33′55″W / 40.208889°N 105.565278°W / 40.208889; -105.565278 (Wild Basin Ranger Station and House)	Estes Park
88	Woodward-Baird House		February 15, 1979 (#79000574)	1733 Canyon Boulevard 40°01′03″N 105°16′16″W / 40.017500°N 105.271111°W / 40.017500; -105.271111 (Woodward-Baird House)	Boulder

Former listings

[3]	Name on the Register	Image	Date listed	Date removed	Location	City or town	Description
1	Snowbound Mine		August 3, 1989 (#89000998)	July 11, 2016	County Road 52 40°04′19″N 105°23′01″W / 40.071944°N 105.383611°W / 40.071944; -105.383611 (Snowbound Mine)	Gold Hill	Burned down September 6, 2010[11]
2	Wilbur Williams House		June 3, 1982 (#82002286)	October 18, 1988	1434 Baseline Rd.	Boulder	Removed from Register due to extensive alterations[12]