26 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cullman | 1 | 20,683 | 18,335 | 2.19% | 911 | 23 | City |
| Cullman | 2 | 20,683 | 18,461 | 2.19% | 911 | 23 | City |
| Hanceville | 3 | 3,379 | 3,212 | 0.99% | 767 | 4 | City |
| Hanceville | 4 | 3,379 | 3,212 | 0.99% | 767 | 4 | City |
| Good Hope | 5 | 2,682 | 2,490 | 1.36% | 340 | 8 | City |
| Good Hope | 6 | 2,682 | 2,499 | 1.36% | 340 | 8 | City |
| Holly Pond | 7 | 875 | 847 | 0.57% | 224 | 4 | Town |
| Holly Pond | 8 | 875 | 848 | 0.57% | 224 | 4 | Town |
| Baileyton | 9 | 699 | 650 | 1.3% | 133 | 5 | Town |
| Baileyton | 10 | 699 | 653 | 1.3% | 133 | 5 | Town |
| West Point | 11 | 660 | 628 | 0.92% | 172 | 4 | Town |
| West Point | 12 | 660 | 629 | 0.92% | 172 | 4 | Town |
| South Vinemont | 13 | 626 | 562 | 1.95% | 691 | 1 | Town |
| South Vinemont | 14 | 626 | 563 | 1.95% | 691 | 1 | Town |
| Dodge City | 15 | 568 | 544 | 0.71% | 162 | 4 | Town |
| Dodge City | 16 | 568 | 545 | 0.71% | 162 | 4 | Town |
| Garden City | 17 | 545 | 528 | 0.55% | 241 | 2 | Town |
| Garden City | 18 | 545 | 529 | 0.55% | 241 | 2 | Town |
| Fairview | 19 | 543 | 525 | 0.56% | 277 | 2 | Town |
| Fairview | 20 | 543 | 526 | 0.56% | 277 | 2 | Town |
| Berlin | 21 | 537 | 501 | 1.13% | 380 | 1 | Town |
| Berlin | 22 | 537 | 504 | 1.13% | 380 | 1 | Town |
| Joppa | 23 | 472 | 636 | 7.03% | 243 | 2 | CDP |
| East Point | 24 | 374 | 363 | 3.31% | 406 | 1 | CDP |
| Colony | 25 | 278 | 265 | 0.72% | 129 | 2 | Town |
| Colony | 26 | 278 | 265 | 0.72% | 129 | 2 | Town |
Cullman is the largest city in Cullman County, with a population of 20,683.
Colony is the smallest city in Cullman County, with a population of 278.
There are 26 cities in Cullman County, Alabama.