5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Selma | 1 | 15,897 | 17,819 | -2.36% | 1,151 | 13.81 | City |
| Valley Grande | 2 | 3,860 | 4,164 | -1.56% | 115 | 33.51 | City |
| Selmont-West Selmont | 3 | 1,700 | 1,855 | -3.63% | 519 | 3.28 | CDP |
| Orrville | 4 | 137 | 152 | -2.14% | 132 | 1.04 | Town |
| Benton | 5 | 36 | 41 | -2.7% | 119 | 0.30 | Town |
Selma is the largest city in Dallas County, with a population of 15,897.
Benton is the smallest city in Dallas County.
There are 5 cities in Dallas County, Alabama.