| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cullman | 1 | 21,263 | 18,469 | 2.23% | 929 | 23 | City |
| Hanceville | 2 | 3,426 | 3,202 | 1.06% | 777 | 4 | City |
| Good Hope | 3 | 2,719 | 2,497 | 1.38% | 345 | 8 | City |
| Holly Pond | 4 | 890 | 853 | 0.68% | 227 | 4 | Town |
| Baileyton | 5 | 711 | 648 | 1.43% | 135 | 5 | Town |
| West Point | 6 | 665 | 621 | 1.06% | 173 | 4 | Town |
| South Vinemont | 7 | 615 | 562 | 1.49% | 679 | 1 | Town |
| Dodge City | 8 | 574 | 544 | 0.88% | 163 | 4 | Town |
| Berlin | 9 | 548 | 505 | 1.29% | 387 | 1 | Town |
| Fairview | 10 | 548 | 524 | 0.55% | 279 | 2 | Town |
| Garden City | 11 | 548 | 528 | 0.55% | 243 | 2 | Town |
| Colony | 12 | 284 | 264 | 1.07% | 131 | 2 | Town |
Cullman is the largest city in Cullman County, with a population of 21,263.
Colony is the smallest city in Cullman County, with a population of 284.
There are 12 cities in Cullman County, Alabama.