11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fort Polk South | 1 | 8,149 | 8,823 | -0.72% | 1,326 | 6 | CDP |
| Oakdale | 2 | 6,445 | 6,690 | -0.69% | 1,241 | 5 | City |
| Oakdale | 3 | 6,445 | 6,669 | -0.69% | 1,241 | 5 | City |
| Kinder | 4 | 2,075 | 2,170 | -0.81% | 376 | 6 | Town |
| Kinder | 5 | 2,075 | 2,160 | -0.81% | 376 | 6 | Town |
| Oberlin | 6 | 1,277 | 1,331 | -0.78% | 291 | 4 | Town |
| Oberlin | 7 | 1,277 | 1,326 | -0.78% | 291 | 4 | Town |
| Elizabeth | 8 | 408 | 413 | -0.24% | 248 | 2 | Village |
| Elizabeth | 9 | 408 | 411 | -0.24% | 248 | 2 | Village |
| Reeves | 10 | 221 | 221 | 0% | 91 | 2 | Village |
| Reeves | 11 | 221 | 220 | 0% | 91 | 2 | Village |
Fort Polk South is the largest city in Allen Parish, with a population of 8,149.
Reeves is the smallest city in Allen Parish, with a population of 221.
There are 11 cities in Allen Parish, Louisiana.