7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 71241 | Farmerville | 7,773 |
| 71234 | Downsville | 5,237 |
| 71280 | Sterlington | 4,999 |
| 71260 | Marion | 3,232 |
| 71222 | Bernice | 2,621 |
| 71277 | Spearsville | 1,792 |
| 71256 | Lillie | 699 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Union Parish, Louisiana (US Census).