| City | County | 2026 Pop. ↓ |
|---|---|---|
| Pearl | Rankin County | 29,220 |
| Pascagoula | Jackson County | 21,288 |
| Picayune | Pearl River County | 12,056 |
| Petal | Forrest County | 11,825 |
| Philadelphia | Neshoba County | 6,814 |
| Pass Christian | Harrison County | 6,634 |
| Pontotoc | Pontotoc County | 6,256 |
| Pearl River | Kemper County | 4,588 |
| Poplarville | Pearl River County | 2,942 |
| Purvis | Lamar County | 1,984 |
| Pelahatchie | Rankin County | 1,335 |
| Port Gibson | Claiborne County | 1,127 |
| Pearlington | Hancock County | 910 |
| Prentiss | Jefferson Davis County | 881 |
| Plantersville | Lee County | 853 |
| Pickens | Holmes County | 787 |
| Polkville | Rankin County | 589 |
| Potts Camp | Marshall County | 388 |
| Puckett | Rankin County | 351 |
| Paris | Lafayette County | 287 |
| Pope | Panola County | 260 |
| Panther Burn | Sharkey County | 222 |
| Pachuta | Clarke County | 193 |
| Pace | Bolivar County | 166 |
| Pittsboro | Calhoun County | 153 |
| Pheba | Clay County | 151 |
| Paden | Prentiss County | 103 |
| Pattison | Claiborne County | 70 |