Tillamook County, Oregon

Tillamook County
Tillamook County Courthouse in Tillamook
Location within the U.S. state of Oregon
Oregon's location within the U.S.
Coordinates: 45°28′N 123°42′W / 45.46°N 123.7°W / 45.46; -123.7
Country United States
State Oregon
FoundedDecember 15, 1853
Named afterTillamook people
SeatTillamook
Largest cityTillamook
Area
  Total
1,333 sq mi (3,450 km2)
  Land1,103 sq mi (2,860 km2)
  Water230 sq mi (600 km2)  17%
Population
 (2020)
  Total
27,390
  Estimate 
(2024)
27,264
  Density23/sq mi (9/km2)
Congressional district1st
Websitewww.co.tillamook.or.us

Tillamook County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 27,390. The county seat is Tillamook. The county is named for the Tillamook people or Killamook people, a Native American tribe who were living in the area in the early 19th century at the time of European American settlement. The county is located within Northwest Oregon.