Yakima County, Washington

Yakima County
Yakima County Courthouse
Location within the U.S. state of Washington
Washington's location within the U.S.
Coordinates: 46°28′N 120°44′W / 46.467°N 120.733°W / 46.467; -120.733
Country United States
State Washington
FoundedJanuary 21, 1865
Named afterYakama Nation
SeatYakima
Largest cityYakima
Area
  Total
4,311 sq mi (11,170 km2)
  Land4,295 sq mi (11,120 km2)
  Water16 sq mi (40 km2)  0.4%
Population
 (2020)
  Total
256,728
  Estimate 
(2024)
258,523
  Density58/sq mi (22/km2)
Time zoneUTC−8 (Pacific)
  Summer (DST)UTC−7 (PDT)
Congressional district4th
Websitewww.yakimacounty.us

Yakima County is a county in the U.S. state of Washington. As of the 2020 census, its population was 256,728. The county seat and most populous city is Yakima. The county was formed out of Ferguson County in January 1865 and is named for the Yakama tribe of Native Americans.

Yakima County comprises the Yakima, WA Metropolitan Statistical Area and is Washington state's most populous majority-Hispanic county as of 2020.