| City | County | 2025 Pop. ↓ |
|---|---|---|
| Pearl | Rankin County | 28,773 |
| Pascagoula | Jackson County | 21,324 |
| Picayune | Pearl River County | 11,856 |
| Petal | Forrest County | 11,603 |
| Philadelphia | Neshoba County | 6,811 |
| Pass Christian | Harrison County | 6,594 |
| Pontotoc | Pontotoc County | 6,045 |
| Pearl River | Kemper County | 4,472 |
| Poplarville | Pearl River County | 2,813 |
| Purvis | Lamar County | 1,973 |
| Pelahatchie | Rankin County | 1,300 |
| Port Gibson | Claiborne County | 1,104 |
| Prentiss | Jefferson Davis County | 897 |
| Plantersville | Lee County | 828 |
| Pickens | Holmes County | 785 |
| Pearlington | Hancock County | 671 |
| Polkville | Rankin County | 586 |
| Paris | Lafayette County | 472 |
| Potts Camp | Marshall County | 392 |
| Puckett | Rankin County | 349 |
| Pope | Panola County | 257 |
| Pachuta | Clarke County | 193 |
| Pace | Bolivar County | 167 |
| Pittsboro | Calhoun County | 149 |
| Pattison | Claiborne County | 125 |
| Paden | Prentiss County | 100 |
| Panther Burn | Sharkey County | 86 |
| Pheba | Clay County | 27 |