22 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Andalusia | 1 | 8,699 | 8,839 | -0.33% | 439 | 20 | City |
| Andalusia | 2 | 8,699 | 8,842 | -0.33% | 439 | 20 | City |
| Opp | 3 | 6,695 | 6,768 | -0.16% | 283 | 24 | City |
| Opp | 4 | 6,695 | 6,749 | -0.16% | 283 | 24 | City |
| Florala | 5 | 1,932 | 1,927 | 0.1% | 183 | 11 | Town |
| Florala | 6 | 1,932 | 1,922 | 0.1% | 183 | 11 | Town |
| River Falls | 7 | 489 | 480 | 0.2% | 72 | 7 | Town |
| River Falls | 8 | 489 | 481 | 0.2% | 72 | 7 | Town |
| Lockhart | 9 | 443 | 444 | 0% | 407 | 1 | Town |
| Lockhart | 10 | 443 | 443 | 0% | 407 | 1 | Town |
| Red Level | 11 | 429 | 430 | 0% | 223 | 2 | Town |
| Red Level | 12 | 429 | 429 | 0% | 223 | 2 | Town |
| Carolina | 13 | 295 | 286 | 0.68% | 266 | 1 | Town |
| Carolina | 14 | 295 | 285 | 0.68% | 266 | 1 | Town |
| Sanford | 15 | 266 | 255 | 0.76% | 64 | 4 | Town |
| Sanford | 16 | 266 | 254 | 0.76% | 64 | 4 | Town |
| Horn Hill | 17 | 208 | 207 | 0% | 81 | 3 | Town |
| Horn Hill | 18 | 208 | 206 | 0% | 81 | 3 | Town |
| Gantt | 19 | 197 | 196 | 0% | 303 | 1 | Town |
| Gantt | 20 | 197 | 195 | 0% | 303 | 1 | Town |
| Libertyville | 21 | 110 | 109 | 0% | 212 | 1 | Town |
| Libertyville | 22 | 110 | 109 | 0% | 212 | 1 | Town |
Andalusia is the largest city in Covington County, with a population of 8,699.
Libertyville is the smallest city in Covington County, with a population of 110.
There are 22 cities in Covington County, Alabama.