County · Pennsylvania · United States
Northumberland County ZIP codes
24 ZIP codes · 24 cities · FIPS 42097
Key facts
- State
- Pennsylvania (PA)
- FIPS code
- 42097
- Population
- 90,925
- Median household income
- $57,948
- Median age
- 44.4
- Land area
- 457.7 sq mi (1,185.3 km²)
- Population density
- 199 / sq mi
- Area codes
- 223, 272, 570, 717
Cities and ZIP codes in Northumberland County (24)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.