Founded in 1870, Union County is one of 82 counties in the state of Mississippi. Historically, Union County was formed from Lee, Pontotoc and Tippah Counties. The city of New Albany is the county seat. With FIPS code of 145, Union County has a population of 27,953 and area of 416 square miles (1,077 km2).
List of all cities in Union County, MS alphabetically
| City/Town | Postal Code | Area Code |
| Alpine, MS | 38828 | 662 |
| Blue Springs, MS | 38828 | 662 |
| Branyan, MS | 38828 | 662 |
| Center, MS | 38828 | 662 |
| Cherrycreek, MS | 38828 | 662 |
| Endville, MS | 38828 | 662 |
| Etta, MS | 38627 | 662 |
| Fairfield, MS | 38828 | 662 |
| Ingomar, MS | 38652 | 662 |
| Jug Fork, MS | 38828 | 662 |
| Keownville, MS | 38652 | 662 |
| Mound City, MS | 38828 | 662 |
| Myrtle, MS | 38650 | 662 |
| New Albany, MS | 38652 | 662 |
| New Harmony, MS | 38828 | 662 |
| North Haven, MS | 38652 | 662 |
| Pinedale, MS | 38627 | 662 |
| Pumpkin Center, MS | 38652 | 662 |
| Wallerville, MS | 38652 | 662 |