Washington County, Oklahoma
Washington County is a county in Oklahoma. Its county FIPS code is 40147. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 40147
- Representative coordinates
- 36.704403, -95.906253
- County type
- County
- County seat or government
- Bartlesville
- Resident population, July 2025
- 54,037
- Land area
- 1,076.202 km²
- Water area
- 22.871 km²
- State
- Oklahoma
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Washington County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 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
74003 · 74006 · 74021 · 74022 · 74029 · 74048 · 74051 · 74061 · 74070 · 74080 · 74082 · 74083
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Washington County government website ↗ is the next stop for county offices, tax, voting, jury and records information. 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.