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Where am ILOCATED

Northumberland County, Pennsylvania

Northumberland County, Pennsylvania, has 89,920 residents (July 2025 estimate). Its county seat is Sunbury. It uses Eastern Time and covers 458 sq mi (1,185 km²) of land.

PhiladelphiaPittsburghAllentown
Northumberland County in Pennsylvania
Columbia CountyMontour CountySchuylkill CountySnyder CountyUnion CountySunburyShamokinNorthumberland
Northumberland County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
89,920
Land area
458 sq mi (1,185 km²)
County seat or government
Sunbury
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$60,583 ± $1,488
Median home value
$162,400 ± $5,611
Median rent, with utilities
$806 ± $37
Homes lived in by their owners
75.5% ± 1.3 points
County type
County
Metro or micro area
Sunbury, PA micro areaCentral county
Water area
19.6 sq mi (50.6 km²)
State
Pennsylvania
County code (FIPS)
42097
Coordinates (central point)
40.851524, -76.709877
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Northumberland County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 1782118,613 people
  2. 1780116,429 people
  3. 1775612,856 people
  4. 1784711,260 people
  5. 178669,769 people
  6. 178728,894 people
  7. 178577,671 people
  8. 178517,234 people
  9. 177777,030 people
  10. 178243,949 people
  11. 178343,480 people
  12. 177722,693 people
All 28
  1. 178602,332 people
  2. 178301,938 people
  3. 170171,509 people
  4. 178811,479 people
  5. 178231,258 people
  6. 17964952 people
  7. 17941733 people
  8. 17868719 people
  9. 17832578 people
  10. 17850576 people
  11. 17867239 people
  12. 17749234 people
  13. 17836190 people
  14. 17840188 people
  15. 1786524 people
  16. 1773011 people

28 ZIP Code areas overlap Northumberland County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address 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.

Townships in Northumberland County, largest first

  1. Coal Township9,769 people
  2. Delaware Township4,280 people
  3. Ralpho Township4,171 people
  4. Point Township3,805 people
  5. West Chillisquaque Township2,604 people
  6. Mount Carmel Township2,501 people
  7. Rockefeller Township2,411 people
  8. Shamokin Township2,328 people
  9. Upper Augusta Township2,287 people
  10. Lewis Township1,966 people
  11. Zerbe Township1,832 people
  12. Rush Township1,585 people
All 23
  1. Turbot Township1,560 people
  2. Lower Mahanoy Township1,432 people
  3. Lower Augusta Township1,262 people
  4. Jackson Township825 people
  5. Washington Township798 people
  6. Jordan Township791 people
  7. Upper Mahanoy Township769 people
  8. East Cameron Township663 people
  9. East Chillisquaque Township617 people
  10. West Cameron Township557 people
  11. Little Mahanoy Township288 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Pennsylvania, by county

School districts in Northumberland County, largest first

  1. Shikellamy School District22,297 people
  2. Shamokin Area School District19,613 people
  3. Danville Area School District19,043 people
  4. Warrior Run School District15,834 people
  5. Milton Area School District15,717 people
  6. Mount Carmel Area School District11,481 people
  7. Southern Columbia Area School District10,234 people
  8. Line Mountain School District8,920 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Sunbury, Pennsylvania (city)9,617 people
  2. Shamokin, Pennsylvania (city)6,853 people
  3. Milton, Pennsylvania (borough)6,534 people
  4. Mount Carmel, Pennsylvania (borough)5,677 people
  5. Northumberland, Pennsylvania (borough)3,866 people
  6. Kulpmont, Pennsylvania (borough)2,724 people
  7. Elysburg, Pennsylvania (CDP)2,492 people
  8. Edgewood, Pennsylvania (CDP)2,078 people
  9. Watsontown, Pennsylvania (borough)2,005 people
  10. Riverside, Pennsylvania (borough)1,806 people
  11. Trevorton, Pennsylvania (CDP)1,775 people
  12. Fairview-Ferndale, Pennsylvania (CDP)1,742 people
All 27
  1. Dewart, Pennsylvania (CDP)1,247 people
  2. Marshallton, Northumberland County, Pennsylvania (CDP)1,187 people
  3. Montandon, Pennsylvania (CDP)831 people
  4. Turbotville, Pennsylvania (borough)808 people
  5. Atlas, Pennsylvania (CDP)719 people
  6. Kapp Heights, Pennsylvania (CDP)712 people
  7. Ranshaw, Pennsylvania (CDP)708 people
  8. Marion Heights, Pennsylvania (borough)578 people
  9. Herndon, Pennsylvania (borough)366 people
  10. Tharptown (Uniontown), Pennsylvania (CDP)358 people
  11. Dalmatia, Pennsylvania (CDP)341 people
  12. McEwensville, Pennsylvania (borough)314 people
  13. Snydertown, Pennsylvania (borough)311 people
  14. Locust Gap, Pennsylvania (CDP)188 people
  15. Strong, Pennsylvania (CDP)14 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Montour County, Pennsylvania13 mi north
  2. Union County, Pennsylvania20 mi northwest
  3. Snyder County, Pennsylvania20 mi west
  4. Columbia County, Pennsylvania21 mi northeast
  5. Schuylkill County, Pennsylvania28 mi east
  6. Dauphin County, Pennsylvania31 mi south
  7. Lycoming County, Pennsylvania38 mi northwest
  8. Juniata County, Pennsylvania42 mi southwest
  9. Perry County, Pennsylvania43 mi southwest

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 where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.