Jefferson County, Pennsylvania
Jefferson County is a county in Pennsylvania. Its county FIPS code is 42065. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 42065
- Representative coordinates
- 41.138028, -79.012419
- County type
- County
- County seat or government
- Brookville
- Resident population, July 2025
- 43,255
- Land area
- 1,689.811 km²
- Water area
- 11.295 km²
- State
- Pennsylvania
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Jefferson County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/New_York | UTC-05:00 in January; UTC-04:00 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
15711 · 15715 · 15730 · 15733 · 15744 · 15764 · 15767 · 15770 · 15772 · 15776 · 15778 · 15780 · 15781 · 15784 · 15801 · 15823 · 15824 · 15825 · 15828 · 15829 · 15840 · 15847 · 15851 · 15853 · 15860 · 15863 · 15864 · 15865 · 16222 · 16240
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Jefferson 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.