City | Rank | Parish | 2026 Pop.↓ |
|---|---|---|---|
| Lake Charles | 1 | Calcasieu Parish | 81,816 |
| Sulphur | 2 | Calcasieu Parish | 20,180 |
| Moss Bluff | 3 | Calcasieu Parish | 11,427 |
| DeRidder | 4 | Beauregard Parish | 9,422 |
| Jennings | 5 | Jefferson Davis Parish | 9,110 |
| Prien | 6 | Calcasieu Parish | 8,349 |
| Fort Polk South | 7 | Allen Parish | 7,829 |
| Oakdale | 8 | Allen Parish | 6,503 |
| Carlyss | 9 | Calcasieu Parish | 5,303 |
| Westlake | 10 | Calcasieu Parish | 4,711 |
| Welsh | 11 | Jefferson Davis Parish | 3,275 |
| Iowa | 12 | Calcasieu Parish | 3,235 |
| Vinton | 13 | Calcasieu Parish | 3,046 |
| DeQuincy | 14 | Calcasieu Parish | 2,820 |
| Lake Arthur | 15 | Jefferson Davis Parish | 2,563 |
| Kinder | 16 | Allen Parish | 2,078 |
| Oberlin | 17 | Allen Parish | 1,278 |
| Elton | 18 | Jefferson Davis Parish | 970 |
| Merryville | 19 | Beauregard Parish | 945 |
| Gillis | 20 | Calcasieu Parish | 787 |
| Roanoke | 21 | Jefferson Davis Parish | 765 |
| Hackberry | 22 | Cameron Parish | 731 |
| Oretta | 23 | Beauregard Parish | 599 |
| Longville | 24 | Beauregard Parish | 458 |
| Elizabeth | 25 | Allen Parish | 409 |
| Reeves | 26 | Allen Parish | 229 |
| Starks | 27 | Calcasieu Parish | 216 |
| Fenton | 28 | Jefferson Davis Parish | 213 |
| Singer | 29 | Beauregard Parish | 211 |
| Hayes | 30 | Calcasieu Parish | 151 |
| Cameron | 31 | Cameron Parish | 124 |
| Lacassine | 32 | Jefferson Davis Parish | 105 |
Calcasieu Parish, Beauregard Parish, Jefferson Davis Parish, Allen Parish, and Cameron Parish are the counties generally consideredpart ofSouthwestLouisiana.