Columbia County, Oregon
Columbia County is a county in Oregon. Its county FIPS code is 41009. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 41009
- Representative coordinates
- 45.941932, -123.081079
- County type
- County
- County seat or government
- St. Helens
- Resident population, July 2025
- 54,091
- Land area
- 1,705.99 km²
- Water area
- 78.476 km²
- State
- Oregon
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Columbia 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
97016 · 97018 · 97048 · 97051 · 97053 · 97054 · 97056 · 97064 · 97231
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Columbia 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.