Washington County, Oklahoma

Washington County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF WASHINGTON GUS Population: 54,060 (2024) ID: 173354	County	Official County Government	Contact: CHAIRMAN 400 S JOHNSTONE AVE, STE 201, BARTLESVILLE OK 74003-6637
CITY OF BARTLESVILLE GUS Population: 38,355 (2024) ID: 173603	Municipal	Municipal Government Within County	Contact: CITY MANAGER 401 S JOHNSTONE AVE, BARTLESVILLE OK 74003-6619
CITY OF DEWEY GUS Population: 3,439 (2024) ID: 111410	Municipal	Municipal Government Within County	Contact: CITY MANAGER 411 E DON TYLER AVE, DEWEY OK 74029-2315
TOWN OF COPAN GUS Population: 729 (2024) ID: 133054	Municipal	Municipal Government Within County	Contact: TREASURER PO BOX 219, COPAN OK 74022-0219
TOWN OF RAMONA GUS Population: 548 (2024) ID: 193953	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 204, RAMONA OK 74061-0204
TOWN OF OCHELATA GUS Population: 443 (2024) ID: 133055	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 268, OCHELATA OK 74051-0268
TOWN OF VERA GUS Population: 336 (2024) ID: 209179	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 207, VERA OK 74082-0207