THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
 
 
 
 
 
 
6 entries match your criteria.  

 
 

Historical Markers in Washington County

 
Clickable Map of Washington County, Idaho and Immediately Adjacent Jurisdictions image/svg+xml 2019-10-06 U.S. Census Bureau, Abe.suleiman; Lokal_Profil; HMdb.org; J.J.Prats/dc:title> https://commons.wikimedia.org/wiki/File:Usa_counties_large.svg Washington County, ID (6) Adams County, ID (5) Gem County, ID (3) Payette County, ID (7) Baker County, OR (66) Malheur County, OR (26)  WashingtonCounty(6) Washington County (6)  AdamsCounty(5) Adams County (5)  GemCounty(3) Gem County (3)  PayetteCounty(7) Payette County (7)  BakerCountyOregon(66) Baker County (66)  MalheurCounty(26) Malheur County (26)
Weiser is the county seat for Washington County
Adjacent to Washington County, Idaho
Adams County (5)  ►
Gem County (3)  ►
Payette County (7)  ►
Baker County, Oregon (66)  ►
Malheur County, Oregon (26)  ►
 
Touch name above to highlight map location.
Touch blue arrow, or on map, to go there.
1 ► Idaho, Washington County, Cambridge — 185 — Brownlee Ferry —
On State Highway 71 at milepost 2, 10 miles west of Camp Creek Road, on the left when traveling north.
2 ► Idaho, Washington County, Cambridge — Martha Jane Roberts — 1844 - 1862 —
On North Superior Street (U.S. 95) at West Hopper Avenue, on the left when traveling north on North Superior Street.
3 ► Idaho, Washington County, Cambridge — 378 — Seven Devils Mines —
On State Highway 71 at milepost 2, 10 miles west of Camp Creek Road, on the left when traveling north.
4 ► Idaho, Washington County, Cambridge — The Cuddy Mill —
On North Superior Street (U.S. 95) near West Hopper Avenue, on the left when traveling north.
5 ► Idaho, Washington County, Midvale — 293 — An Early Industry —
On U.S. 95 near Sage Creek Road, on the left when traveling north.
6 ► Idaho, Washington County, Weiser — 487 — 11,000 Years of Indian Occupation —
On U.S. 95 at milepost 82, 0.1 miles south of Appleton Lane, on the right when traveling north.
 
 
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Nov. 10, 2026