Cities and Towns in Union County, Pennsylvania
Founded in 1813, Union County is one of 67 counties in the state of Pennsylvania. Historically, Union County was formed from parts of Northumberland County. The city of Lewisburg is the county seat. With FIPS code of 119, Union County has a population of 42,568 and area of 317 square miles (821 km²).
List of all cities in Union County, PA alphabetically
| City/Town | Postal Code | Area Code |
| Allenwood, PA | 17810 | 570 |
| Brook Park, PA | 17837 | 570 |
| Buffalo Crossroads, PA | 17837 | 570 |
| Cherry Run, PA | 17885 | 570 |
| College Park, PA | 17837 | 570 |
| Cowan, PA | 17844 | 570 |
| Dice, PA | 17844 | 570 |
| Dry Valley, PA | 17889 | 570 |
| East Buffalo, PA | 17837 | 570 |
| Elimsport, PA | 17810 | 570 |
| Fairville, PA | 17837 | 570 |
| Foresthill, PA | 17844 | 570 |
| Gleniron, PA | 17845 | 570 |
| Gregg, PA | 17810 | 570 |
| Hartleton, PA | 17829 | 570 |
| Kelly, PA | 17837 | 570 |
| Kelly Crossroads, PA | 17837 | 570 |
| Kelly Point, PA | 17837 | 570 |
| Laurel Park, PA | 17845 | 570 |
| Laurelton, PA | 17835 | 570 |
| Lewisburg, PA | 17837 | 570 |
| 17886 | 570 | |
| Linntown, PA | 17837 | 570 |
| Lochiel, PA | 17837 | 570 |
| Mazeppa, PA | 17837 | 570 |
| Mifflinburg, PA | 17844 | 570 |
| Millmont, PA | 17845 | 570 |
| New Berlin, PA | 17855 | 570 |
| New Columbia, PA | 17856 | 570 |
| 17886 | 570 | |
| Red Bank, PA | 17844 | 570 |
| Swengel, PA | 17880 | 570 |
| Vicksburg, PA | 17883 | 570 |
| Weikert, PA | 17885 | 570 |
| West Acres, PA | 17837 | 570 |
| West Buffalo, PA | 17844 | 570 |
| West Milton, PA | 17856 | 570 |
| 17886 | 570 | |
| White Deer, PA | 17887 | 570 |
| Whitesprings, PA | 17844 | 570 |
| Whtdeer, PA | 17887 | 570 |
| Winfield, PA | 17889 | 570 |
