what county is umatilla oregon in
Umatilla /ËjuËmÉËtÉªlÉ/ is a city in Umatilla County, Oregon, United States. It is named for the Umatilla River, which enters the Columbia River on the side of the city. The river is named after the Umatilla Tribe. The city is on the south side of the Columbia River along U.S. Route 730 and I-82. The Umatilla Chemical Depot, and the Umatilla Chemical Agent Disposal Facility, is 6 miles (10 km) southwest of the city, northwest of the intersection of I-84 and I-82. The estimated population was in 2012 was 7,010.