Umatilla County, Oregon

Umatilla County (/ˌjuːməˈtɪlə/) is a county in the U.S. state of Oregon. The county seat is Umatilla. In 2020, 80,075 people lived there. The county includes 3,231 square miles (8,369 km²) of which 3,215 is land and the rest is water.

Umatilla County, Oregon
Map
Location in the state of Oregon
Map of the USA highlighting Oregon Oregon's location in the U.S.
Statistics
Founded	September 27, 1862
Seat	Pendleton
Largest City	Hermiston
Area  - Total  - Land  - Water	3,231 sq mi (8,368 km²) 3,216 sq mi (8,329 km²) 16 sq mi (41 km²), 0.5%
Population  -  Density	23/sq mi (9/km²)
Time zone	Pacific: UTC-8/-7
Website: www.co.umatilla.or.us
Named for: Umatilla River

Umatilla County, Oregon Media

• Umatilla County.svg

  This map shows major highways and roads, cities and federal and state land withing Umatilla County. This map was created in ArcGIS Pro, with data from the Oregon Department of Transportation, the United States Bureau of Land Management and the United States Census Bureau.

• Highway84Eve.jpg

  I-84 eastbound and McKay Reservoir in Umatilla County

• Umatilla County Registered Voters 2022.png

  Registered Voters by Political Party in Umatilla County, Oregon in June, 2022.

• Ontario trestle.JPG

  Trestle seen off Sparks Station Rd at Pendleton Country Club, opposite of the McKay Reservoir, Pendleton, Oregon. Transportation linkages in Umatilla are one of the county's major advantages.

• Steen Road Grain Elevator (Umatilla County, Oregon scenic images) (umaDA0088).jpg

  An old grain elevator along Steen Road south of Milton-Freewater, Umatilla County.

• Umatilla County Employment 2012-2022.jpg

  Umatilla County Employment 2012-2022