Umatilla County, Oregon

Umatilla County () 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.

 References 

Category:Oregon counties
Category:1862 establishments in Oregon