13 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alabaster | 1 | 34,989 | 33,401 | 0.76% | 1,333 | 26 | City |
| Pelham | 2 | 25,971 | 24,245 | 1.12% | 670 | 39 | City |
| Helena | 3 | 22,752 | 21,096 | 1.23% | 914 | 25 | City |
| Calera | 4 | 19,482 | 16,626 | 2.5% | 801 | 24 | City |
| Chelsea | 5 | 18,320 | 15,238 | 2.89% | 560 | 33 | City |
| Montevallo | 6 | 8,028 | 7,226 | 1.7% | 625 | 13 | City |
| Columbiana | 7 | 5,090 | 4,532 | 1.86% | 279 | 18 | City |
| Indian Springs Village | 8 | 2,557 | 2,538 | 0.12% | 659 | 4 | City |
| Westover | 9 | 2,120 | 1,790 | 2.66% | 107 | 20 | Town |
| Harpersville | 10 | 2,071 | 1,633 | 3.65% | 94 | 22 | Town |
| Vincent | 11 | 2,065 | 1,986 | 0.63% | 100 | 21 | Town |
| Wilsonville | 12 | 1,992 | 1,860 | 1.12% | 187 | 11 | Town |
| Wilton | 13 | 595 | 591 | 0.17% | 622 | 1 | Town |
Alabaster is the largest city in Shelby County, with a population of 34,989.
Wilton is the smallest city in Shelby County, with a population of 595.
There are 13 cities in Shelby County, Alabama.