| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Anderson | 1 | 31,715 | 29,506 | 1.25% | 1,922 | 16 | City |
| Belton | 2 | 4,692 | 4,341 | 1.32% | 1,220 | 4 | City |
| Williamston | 3 | 4,396 | 4,060 | 1.34% | 1,141 | 4 | Town |
| Honea Path | 4 | 4,003 | 3,696 | 1.34% | 1,139 | 4 | Town |
| Pendleton | 5 | 3,790 | 3,498 | 1.36% | 773 | 5 | Town |
| Pelzer | 6 | 1,453 | 1,346 | 1.32% | 1,590 | 1 | Town |
| Iva | 7 | 1,225 | 1,132 | 1.32% | 1,196 | 1 | Town |
| West Pelzer | 8 | 1,052 | 967 | 1.35% | 1,748 | 1 | Town |
| Starr | 9 | 182 | 166 | 1.11% | 121 | 1 | Town |
Anderson is the largest city in Anderson County, with a population of 31,715.
Starr is the smallest city in Anderson County, with a population of 182.
There are 9 cities in Anderson County, South Carolina.