9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Anderson | 1 | 31,306 | 29,458 | 1.19% | 1,898 | 16 | City |
| Belton | 2 | 4,630 | 4,343 | 1.25% | 1,204 | 4 | City |
| Williamston | 3 | 4,342 | 4,056 | 1.33% | 1,127 | 4 | Town |
| Honea Path | 4 | 3,933 | 3,693 | 1.24% | 1,119 | 4 | Town |
| Pendleton | 5 | 3,747 | 3,497 | 1.35% | 764 | 5 | Town |
| Pelzer | 6 | 1,449 | 1,346 | 1.4% | 1,585 | 1 | Town |
| Iva | 7 | 1,206 | 1,128 | 1.26% | 1,178 | 1 | Town |
| West Pelzer | 8 | 1,041 | 971 | 1.36% | 1,729 | 1 | Town |
| Starr | 9 | 176 | 164 | 1.15% | 117 | 1 | Town |
Anderson is the largest city in Anderson County, with a population of 31,306.
Starr is the smallest city in Anderson County, with a population of 176.
There are 9 cities in Anderson County, South Carolina.