| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Aiken | 1 | 33,899 | 32,180 | 0.27% | 1,537 | 22 | City |
| North Augusta | 2 | 27,429 | 24,473 | 1.66% | 1,276 | 21 | City |
| Batesburg-Leesville | 3 | 5,367 | 5,259 | 0.39% | 655 | 8 | Town |
| Burnettown | 4 | 3,310 | 3,070 | 1.32% | 601 | 6 | Town |
| New Ellenton | 5 | 2,367 | 2,203 | 1.24% | 533 | 4 | Town |
| Jackson | 6 | 1,663 | 1,528 | 1.46% | 472 | 4 | Town |
| Wagener | 7 | 704 | 641 | 1.59% | 518 | 1 | Town |
| Salley | 8 | 360 | 335 | 1.12% | 470 | 1 | Town |
| Perry | 9 | 216 | 195 | 1.41% | 225 | 1 | Town |
| Monetta | 10 | 214 | 198 | 0.94% | 310 | 1 | Town |
| Windsor | 11 | 126 | 112 | 1.61% | 144 | 1 | Town |
Aiken is the largest city in Aiken County, with a population of 33,899.
Windsor is the smallest city in Aiken County, with a population of 126.
There are 11 cities in Aiken County, South Carolina.