21 cities
| City | Parish | 2026 Pop. ↓ |
|---|---|---|
| Ruston | Lincoln Parish | 22,417 |
| River Ridge | Jefferson Parish | 13,095 |
| Raceland | Lafourche Parish | 10,592 |
| Red Chute | Bossier Parish | 7,685 |
| Reserve | St. John the Baptist Parish | 6,941 |
| Rayne | Acadia Parish | 6,853 |
| Richwood | Ouachita Parish | 3,774 |
| Rayville | Richland Parish | 3,123 |
| Rosepine | Vernon Parish | 1,410 |
| Ringgold | Bienville Parish | 1,280 |
| Roseland | Tangipahoa Parish | 897 |
| Roanoke | Jefferson Davis Parish | 765 |
| Rosedale | Iberville Parish | 636 |
| Reddell | Evangeline Parish | 590 |
| Ridgecrest | Concordia Parish | 520 |
| Richmond | Madison Parish | 459 |
| Rock Hill | Grant Parish | 339 |
| Rio | St. Tammany Parish | 267 |
| Reeves | Allen Parish | 221 |
| Rodessa | Caddo Parish | 181 |
| Robeline | Natchitoches Parish | 117 |