Benton County, Washington
Benton County is a county in Washington. Its county FIPS code is 53005. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 53005
- Representative coordinates
- 46.228125, -119.516659
- County type
- County
- County seat or government
- Prosser
- Resident population, July 2025
- 221,722
- Land area
- 4,403.31 km²
- Water area
- 154.294 km²
- State
- Washington
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Benton County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Los_Angeles | UTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
98930 · 98944 · 99320 · 99336 · 99337 · 99338 · 99345 · 99346 · 99350 · 99352 · 99353 · 99354
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
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Find the county at your current point, check its ZIP area, or find its physical time zone.