| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alabaster | 1 | 35,014 | 33,398 | 0.77% | 1,334 | 26 | City |
| Pelham | 2 | 25,955 | 24,242 | 1.13% | 670 | 39 | City |
| Helena | 3 | 23,644 | 22,293 | 1.09% | 950 | 25 | City |
| Calera | 4 | 19,471 | 16,627 | 2.52% | 801 | 24 | City |
| Chelsea | 5 | 18,226 | 15,247 | 2.88% | 557 | 33 | City |
| Montevallo | 6 | 8,005 | 7,223 | 1.69% | 624 | 13 | City |
| Columbiana | 7 | 5,199 | 4,537 | 1.82% | 285 | 18 | City |
| Indian Springs Village | 8 | 2,557 | 2,538 | 0.16% | 659 | 4 | City |
| Westover | 9 | 2,177 | 1,792 | 2.64% | 110 | 20 | Town |
| Harpersville | 10 | 2,093 | 1,637 | 3.67% | 95 | 22 | Town |
| Vincent | 11 | 2,057 | 1,984 | 0.59% | 100 | 21 | Town |
| Wilsonville | 12 | 2,038 | 1,865 | 1.14% | 192 | 11 | Town |
| Wilton | 13 | 601 | 591 | 0.17% | 628 | 1 | Town |
Alabaster is the largest city in Shelby County, with a population of 35,014.
Wilton is the smallest city in Shelby County, with a population of 601.
There are 13 cities in Shelby County, Alabama.