Washington County, Idaho

Washington County is a county in the U.S. state of Idaho. As of the 2020 census, the population was 10,500.^[1] The county seat and largest city is Weiser.^[2] It has over half of the county's population. The county was founded in 1879 when Idaho was a territory and named after George Washington, the first President of the United States (1789–1797).

Washington County
County
Washington County Courthouse in Weiser
Location within the U.S. state of Idaho
Idaho's location within the U.S.
Coordinates: 44°27′N 116°47′W
Country	United States
State	Idaho
Founded	February 20, 1879
Named for	George Washington
Seat	Weiser
Largest city	Weiser
Area
• Total	1,474 sq mi (3,820 km2)
• Land	1,453 sq mi (3,760 km2)
• Water	21 sq mi (50 km2)  1.4%
Population  (2020)
• Total	10,500
• Density	7.1/sq mi (2.8/km2)
Time zone	UTC−7 (Mountain)
• Summer (DST)	UTC−6 (MDT)
Congressional district	1st
Website	www.co.washington.id.us

Communities

Cities

• Cambridge
• Midvale
• Weiser