| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Crowley | 1 | 11,133 | 11,652 | -0.8% | 1,903 | 6 | City |
| Rayne | 2 | 6,944 | 7,242 | -0.73% | 1,831 | 4 | City |
| Church Point | 3 | 4,008 | 4,173 | -0.69% | 1,385 | 3 | Town |
| Iota | 4 | 1,243 | 1,299 | -0.8% | 979 | 1 | Town |
| Estherwood | 5 | 670 | 698 | -0.74% | 359 | 2 | Village |
| Morse | 6 | 620 | 593 | 0.32% | 443 | 1 | Village |
| Mermentau | 7 | 485 | 514 | -1.02% | 227 | 2 | Village |
Crowley is the largest city in Acadia Parish, with a population of 11,133.
Mermentau is the smallest city in Acadia Parish, with a population of 485.
There are 7 cities in Acadia Parish, Louisiana.