Union County, Pennsylvania
11 ZIP codes · 315.96 sq mi of land · FIPS 42119
| Population | 42,456 |
|---|---|
| State | Pennsylvania |
| FIPS code | 42119 |
| Time zone | Eastern |
| Land area | 315.96 sq mi |
| Center (lat, long) | 40.9622, -77.0555 |
Area codes in this area
These are the area codes that most often serve Union County (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.
Cities and towns (largest first)
HartletonLaureltonLewisburgMifflinburgMillmontNew BerlinNew ColumbiaSwengelWeikertWest MiltonWhite Deer
ZIP codes in Union County
17829 Hartleton17835 Laurelton17837 Lewisburg17844 Mifflinburg17845 Millmont17855 New Berlin17856 New Columbia17880 Swengel17885 Weikert17886 West Milton17887 White Deer
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.