Wasco County, Oregon

Wasco County
Wasco County Courthouse in The Dalles
Location within the U.S. state of Oregon
Oregon's location within the U.S.
Coordinates: 45°10′N 121°10′W / 45.16°N 121.16°W / 45.16; -121.16
Country United States
State Oregon
FoundedJanuary 11, 1854
Named afterWasco people
SeatThe Dalles
Largest cityThe Dalles
Area
  Total
2,395 sq mi (6,200 km2)
  Land2,382 sq mi (6,170 km2)
  Water14 sq mi (40 km2)  0.6%
Population
 (2020)
  Total
26,670
  Estimate 
(2024)
26,507
  Density11/sq mi (4.3/km2)
Time zoneUTC−8 (Pacific)
  Summer (DST)UTC−7 (PDT)
Congressional district2nd
Websiteco.wasco.or.us

Wasco County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 25,213. Its county seat is The Dalles. The county is named for a local tribe of Native Americans, the Wasco, a Chinook tribe who live on the south side of the Columbia River. It is near the Washington state line. Wasco County comprises The Dalles Micropolitan Statistical Area.