This is a list of the National Register of Historic Places listings in Washington County, Idaho.

This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Washington County, Idaho, 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 30 properties and districts listed on the National Register in the county. More may be added; properties and districts nationwide are added to the Register weekly.^[2]

          This National Park Service list is complete through NPS recent listings posted February 2, 2024.^[3]

Current listings

[4]	Name on the Register[5]	Image	Date listed[6]	Location	City or town	Description
1	Anderson–Elwell House		November 17, 1982 (#82000373)	547 W. 1st St. 44°14′51″N 116°58′16″W / 44.247463°N 116.971040°W / 44.247463; -116.971040 (Anderson–Elwell House)	Weiser
2	Baptist Church		October 7, 1977 (#77000470)	E. Main and 8th Sts. 44°14′45″N 116°57′22″W / 44.245902°N 116.956160°W / 44.245902; -116.956160 (Baptist Church)	Weiser
3	Butterfield Livestock Company House		November 17, 1982 (#82000374)	North of Weiser on Jenkins Creek Rd. 44°15′29″N 116°59′38″W / 44.258068°N 116.993986°W / 44.258068; -116.993986 (Butterfield Livestock Company House)	Weiser
4	Cambridge News Office		December 28, 1989 (#89002128)	155 N. Superior St. 44°34′24″N 116°40′30″W / 44.573212°N 116.675130°W / 44.573212; -116.675130 (Cambridge News Office)	Cambridge
5	Col. C. F. Drake House		January 20, 1978 (#78001104)	516 E. Main St. 44°14′45″N 116°57′39″W / 44.245924°N 116.960795°W / 44.245924; -116.960795 (Col. C. F. Drake House)	Weiser
6	Edwards–Gillette Barn		February 19, 2002 (#02000013)	3059 Rush Creek Rd. 44°35′43″N 116°42′06″W / 44.595225°N 116.701729°W / 44.595225; -116.701729 (Edwards–Gillette Barn)	Cambridge
7	James M. Fisher House		September 4, 1986 (#86002146)	598 Pioneer Rd. 44°15′12″N 116°58′37″W / 44.253261°N 116.976894°W / 44.253261; -116.976894 (James M. Fisher House)	Weiser
8	Thomas C. Galloway House		January 26, 1978 (#78001105)	1120 E. 2nd St. 44°15′10″N 116°58′00″W / 44.252661°N 116.966589°W / 44.252661; -116.966589 (Thomas C. Galloway House)	Weiser
9	Bernard Haas House		May 22, 1978 (#78001106)	377 E. Main St. 44°14′43″N 116°57′50″W / 44.245405°N 116.964013°W / 44.245405; -116.964013 (Bernard Haas House)	Weiser
10	Herman Haas House		November 17, 1982 (#82000375)	253 W. Idaho St. 44°14′47″N 116°58′27″W / 44.246340°N 116.974064°W / 44.246340; -116.974064 (Herman Haas House)	Weiser
10	Institute Canal Company Pump House		May 8, 2017 (#100000958)	South end of Fairview St. at the Galloway Canal 44°15′24″N 116°58′12″W / 44.256628°N 116.969978°W / 44.256628; -116.969978 (Institute Canal Company Pump House)	Weiser
11	Intermountain Institute	More images	November 1, 1979 (#79000811)	Paddock Ave. 44°15′53″N 116°58′51″W / 44.264804°N 116.980731°W / 44.264804; -116.980731 (Intermountain Institute)	Weiser
12	Jewell Building		January 18, 1990 (#89002263)	15 N. Superior St. 44°34′19″N 116°40′36″W / 44.571982°N 116.676757°W / 44.571982; -116.676757 (Jewell Building)	Cambridge
13	Knights of Pythias Lodge Hall		May 13, 1976 (#76000683)	30 E. Idaho St. 44°14′44″N 116°58′11″W / 44.245497°N 116.969747°W / 44.245497; -116.969747 (Knights of Pythias Lodge Hall)	Weiser
14	Kurtz-Van Sicklin House		November 17, 1982 (#82000376)	253 W. Main St. 44°14′50″N 116°58′25″W / 44.247165°N 116.973637°W / 44.247165; -116.973637 (Kurtz-Van Sicklin House)	Weiser
15	Archie Larsen House		November 17, 1982 (#82000377)	South of Weiser on Larsen Rd. 44°11′43″N 116°56′11″W / 44.195270°N 116.936395°W / 44.195270; -116.936395 (Archie Larsen House)	Weiser	Building no longer exists.
16	G. V. Nesbit House		November 17, 1982 (#82000378)	308 W. Liberty St. 44°14′58″N 116°58′23″W / 44.249344°N 116.972975°W / 44.249344; -116.972975 (G. V. Nesbit House)	Weiser
17	Dr. J. R. Numbers House		November 17, 1982 (#82000379)	240 W. Main St. 44°14′51″N 116°58′23″W / 44.247513°N 116.973161°W / 44.247513; -116.973161 (Dr. J. R. Numbers House)	Weiser
18	St. Agnes Catholic Church	More images	July 24, 1978 (#78001107)	204 E. Liberty St. 44°14′53″N 116°58′00″W / 44.248187°N 116.966631°W / 44.248187; -116.966631 (St. Agnes Catholic Church)	Weiser
19	St. Luke's Episcopal Church	More images	July 24, 1978 (#78001108)	E. 1st and Liberty Sts. 44°14′53″N 116°58′04″W / 44.248139°N 116.967821°W / 44.248139; -116.967821 (St. Luke's Episcopal Church)	Weiser
20	Salubria Lodge No. 31		March 9, 1990 (#90000368)	85 W. Central Blvd. 44°34′23″N 116°40′36″W / 44.573110°N 116.676548°W / 44.573110; -116.676548 (Salubria Lodge No. 31)	Cambridge
21	Morris Sommer House		November 17, 1982 (#82000380)	548 W. 2nd St. 44°14′52″N 116°58′21″W / 44.247784°N 116.972362°W / 44.247784; -116.972362 (Morris Sommer House)	Weiser
22	Mary Elizabeth Sommercamp House		November 17, 1982 (#82000381)	411 W. 3rd St. 44°14′49″N 116°58′28″W / 44.246950°N 116.974382°W / 44.246950; -116.974382 (Mary Elizabeth Sommercamp House)	Weiser
23	Star Theater		November 30, 1999 (#99001413)	342 State St. 44°14′43″N 116°58′13″W / 44.245271°N 116.970308°W / 44.245271; -116.970308 (Star Theater)	Weiser
24	B. S. Varian House		November 17, 1982 (#82000382)	241 W. Main St. 44°14′49″N 116°58′24″W / 44.247070°N 116.973395°W / 44.247070; -116.973395 (B. S. Varian House)	Weiser
25	Washington County Courthouse		September 28, 1987 (#87001602)	E. Court St. 44°14′51″N 116°57′59″W / 44.247458°N 116.966280°W / 44.247458; -116.966280 (Washington County Courthouse)	Weiser
26	Benjamin Watlington House		April 26, 1991 (#91000458)	206 W. Court St. 44°14′53″N 116°58′20″W / 44.248179°N 116.972159°W / 44.248179; -116.972159 (Benjamin Watlington House)	Weiser
27	Weiser Oregon Short Line Railroad Depot		February 7, 2007 (#07000006)	1 State St. 44°14′38″N 116°58′17″W / 44.243920°N 116.971290°W / 44.243920; -116.971290 (Weiser Oregon Short Line Railroad Depot)	Weiser
28	Weiser Post Office	More images	November 17, 1982 (#82000383)	Main and W. 1st Sts. 44°14′49″N 116°58′17″W / 44.246936°N 116.971460°W / 44.246936; -116.971460 (Weiser Post Office)	Weiser
29	Wilson House		January 6, 2004 (#03001369)	75 N. 5th St. 44°34′35″N 116°40′55″W / 44.576303°N 116.681826°W / 44.576303; -116.681826 (Wilson House)	Cambridge