Northumberland County, Pennsylvania
Northumberland County is a county in Pennsylvania. Its county FIPS code is 42097. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 42097
- Representative coordinates
- 40.851524, -76.709877
- County type
- County
- County seat or government
- Sunbury
- Resident population, July 2025
- 89,920
- Land area
- 1,185.381 km²
- Water area
- 50.639 km²
- State
- Pennsylvania
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Northumberland 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
17017 · 17730 · 17749 · 17756 · 17772 · 17777 · 17801 · 17821 · 17823 · 17824 · 17830 · 17832 · 17834 · 17836 · 17840 · 17847 · 17850 · 17851 · 17857 · 17860 · 17865 · 17866 · 17867 · 17868 · 17872 · 17881 · 17941 · 17964
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Northumberland 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.
- Atlas CDP, PA
- Dalmatia CDP, PA
- Dewart CDP, PA
- Edgewood CDP, PA
- Elysburg CDP, PA
- Fairview-Ferndale CDP, PA
- Herndon borough, PA
- Kapp Heights CDP, PA
- Kulpmont borough, PA
- Locust Gap CDP, PA
- McEwensville borough, PA
- Marion Heights borough, PA
- Marshallton CDP, PA
- Milton borough, PA
- Montandon CDP, PA
- Mount Carmel borough, PA
- Northumberland borough, PA
- Ranshaw CDP, PA
- Riverside borough, PA
- Shamokin city, PA
- Snydertown borough, PA
- Strong CDP, PA
- Sunbury city, PA
- Tharptown (Uniontown) CDP, PA
- Trevorton CDP, PA
- Turbotville borough, PA
- Watsontown borough, PA
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.