| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Una | city | Mississippi | United States | 33.79694 | -88.80694 | 262 | 1473 |
| Union | city | Mississippi | United States | 31.88056 | -90.08389 | 269 | 1430 |
| Union | city | Mississippi | United States | 31.98333 | -89.52083 | 492 | 1536 |
| Union | city | Mississippi | United States | 31.7375 | -89.49028 | 347 | 1922 |
| Union | city | Mississippi | United States | 31.50222 | -89.48083 | 252 | 1632 |
| Union | city | Mississippi | United States | 31.47917 | -89.20111 | 262 | 1737 |
| Union | city | Mississippi | United States | 32.57139 | -89.12139 | 495 | 1613 |
| Union | city | Mississippi | United States | 34.16083 | -88.63167 | 242 | 4586 |
| Union Church | city | Mississippi | United States | 31.68278 | -90.7875 | 449 | 810 |
| Union Hall | city | Mississippi | United States | 34.22444 | -89.54278 | 429 | 1581 |
| Union Hill | city | Mississippi | United States | 34.48639 | -88.95194 | 498 | 4727 |
| Uniontown historical | city | Mississippi | United States | 31.75833 | -91.17278 | 196 | 679 |
| Unity | city | Mississippi | United States | 34.39 | -88.56889 | 390 | 3433 |
| Unity historical | city | Mississippi | United States | 33.17083 | -89.73056 | 351 | 646 |
| University Estates subdivision | city | Mississippi | United States | 33.45833 | -88.77694 | 351 | 17120 |
| University Heights subdivision | city | Mississippi | United States | 33.45056 | -88.80694 | 400 | 22434 |
| University subdivision | city | Mississippi | United States | 34.36583 | -89.52528 | 495 | 14701 |
| Updike | city | Mississippi | United States | 33.05944 | -90.76861 | 95 | 519 |
| Upton | city | Mississippi | United States | 31.99 | -89.70389 | 383 | 1771 |
| Urbo historical | city | Mississippi | United States | 32.31944 | -89.08611 | 351 | 3722 |
| Usrytown | city | Mississippi | United States | 32.38639 | -89.38111 | 449 | 2411 |
| Ustane | city | Mississippi | United States | 31.28667 | -90.83139 | 347 | 1061 |
| Utica | city | Mississippi | United States | 32.10944 | -90.62333 | 291 | 1602 |
|
|