Benton County, Washington
Benton 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 |
|---|---|---|---|
|
GUS Population: 218,190 (2024)
ID: 183782
|
County | Official County Government |
Contact: FINANCE MANAGER
PO BOX 190, PROSSER WA 99350-0190
|
|
GUS Population: 86,728 (2024)
ID: 136101
|
Municipal | Municipal Government Within County |
Contact: PLANNING DIRECTOR
PO BOX 6108, KENNEWICK WA 99336-0108
|
|
GUS Population: 64,372 (2024)
ID: 136102
|
Municipal | Municipal Government Within County |
Contact: DEVELOPMENT SERVICES MANAGER
PO BOX 190, RICHLAND WA 99352-0190
|
|
GUS Population: 18,820 (2024)
ID: 176812
|
Municipal | Municipal Government Within County |
Contact: MAYOR
3801 W VAN GIESEN ST, WEST RICHLAND WA 99353-5033
|
|
GUS Population: 6,540 (2024)
ID: 114612
|
Municipal | Municipal Government Within County |
Contact: CITY PLANNER
601 7TH ST, PROSSER WA 99350-1459
|
|
GUS Population: 3,876 (2024)
ID: 176811
|
Municipal | Municipal Government Within County |
Contact: CITY CLERK/TREASURER
PO BOX 70, BENTON CITY WA 99320-0070
|