Columbia County

Follow the fast track to Columbia County and you’ll find out eastern Washington’s economic engine is humming along. Dayton, the county seat, is all about connections: railroads, highways, rivers, telecommunications and people. The Snake River, our northern border, connects Columbia County with the world via barge access to ports along the Columbia River and in Portland; Highway 12 connects trucking companies with major transportation routes such as Interstates 82 and 84; Columbia Walla Walla Railroad connects Dayton with the hump yards of two major railroads; high-speed internet connects our citizens with worldwide commuting possibilities; and the Blue Mountains, our southern border, connects people in our region with fantastic outdoor recreation opportunities right in our backyard.


Square Miles: 873
Largest City: Dayton
County Seat: Dayton

Median Household Income: $53,423
Cost of Living Index: 99.2
Average Home Price: $189,426

Drive Times:
Dayton to Seattle: 4.5 hours
Dayton to Spokane: 2.25 hours
Dayton to Portland: 4.5 hours

County Website
Economic Development Website