21 cities
| City | Parish | 2025 Pop. ↓ |
|---|---|---|
| Ruston | Lincoln Parish | 22,373 |
| River Ridge | Jefferson Parish | 13,120 |
| Raceland | Lafourche Parish | 10,567 |
| Red Chute | Bossier Parish | 7,596 |
| Reserve | St. John the Baptist Parish | 7,118 |
| Rayne | Acadia Parish | 6,918 |
| Richwood | Ouachita Parish | 3,791 |
| Rayville | Richland Parish | 3,159 |
| Rosepine | Vernon Parish | 1,427 |
| Ringgold | Bienville Parish | 1,298 |
| Roseland | Tangipahoa Parish | 894 |
| Roanoke | Jefferson Davis Parish | 751 |
| Rosedale | Iberville Parish | 639 |
| Reddell | Evangeline Parish | 599 |
| Ridgecrest | Concordia Parish | 529 |
| Richmond | Madison Parish | 467 |
| Rock Hill | Grant Parish | 335 |
| Rio | St. Tammany Parish | 250 |
| Reeves | Allen Parish | 221 |
| Rodessa | Caddo Parish | 182 |
| Robeline | Natchitoches Parish | 118 |