4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Selma | 1 | 15,556 | 17,824 | -2.37% | 1,127 | 14 | City |
| Valley Grande | 2 | 3,787 | 4,168 | -1.64% | 113 | 34 | City |
| Orrville | 3 | 134 | 152 | -2.19% | 129 | 1 | Town |
| Benton | 4 | 35 | 41 | -2.78% | 116 | 0 | Town |
Selma is the largest city in Dallas County, with a population of 15,556.
Benton is the smallest city in Dallas County, with a population of 35.
There are 4 cities in Dallas County, Alabama.