ZIP CodesZIP codes in Union County, Pennsylvania
Union County, Pennsylvania has 14 ZIP codes in this list, from 17810 to 17889. They cover 14 places, among them Allenwood, Hartleton, Laurelton and Lewisburg.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 17810 | Allenwood | 55.1 | 41.126, -76.972 |
| 17829 | Hartleton | 0.7 | 40.901, -77.156 |
| 17835 | Laurelton | 0.1 | 40.883, -77.199 |
| 17837 | Lewisburg | 56.2 | 40.970, -76.910 |
| 17844 | Mifflinburg | 107 | 40.922, -77.050 |
| 17845 | Millmont | 62.2 | 40.880, -77.194 |
| 17855 | New Berlin | 1.9 | 40.880, -76.986 |
| 17856 | New Columbia | 48.8 | 41.054, -76.902 |
| 17880 | Swengel | 0.0 | 40.892, -77.127 |
| 17883 | Vicksburg | no area | 40.939, -76.988 |
| 17885 | Weikert | 12.9 | 40.858, -77.295 |
| 17886 | West Milton | 0.8 | 41.018, -76.871 |
| 17887 | White Deer | 0.2 | 41.076, -76.875 |
| 17889 | Winfield | 24.6 | 40.891, -76.872 |
The ZIP code areas of Union County add up to about 370 square miles of land (959 sq km) as the Census Bureau draws them. The largest is 17844 (Mifflinburg), with 107 square miles.
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Allenwood, PA 17810.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.