5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jennings | 1 | 9,150 | 9,798 | -1.4% | 866 | 11 | City |
| Welsh | 2 | 3,261 | 3,330 | -0.43% | 516 | 6 | Town |
| Lake Arthur | 3 | 2,557 | 2,591 | -0.27% | 1,379 | 2 | Town |
| Elton | 4 | 976 | 993 | -0.41% | 588 | 2 | Town |
| Fenton | 5 | 213 | 230 | -1.84% | 439 | 0 | Village |
Jennings is the largest city in Jefferson Davis Parish, with a population of 9,150.
Fenton is the smallest city in Jefferson Davis Parish, with a population of 213.
There are 5 cities in Jefferson Davis Parish, Louisiana.