6 cities
| City | County | 2025 Pop. ↓ |
|---|---|---|
| Keowee Key | Oconee County | 3,824 |
| Kingstree | Williamsburg County | 2,966 |
| Kershaw | Lancaster County | 2,041 |
| Kiawah Island | Charleston County | 1,949 |
| Kline | Allendale County | 144 |
| Ketchuptown | Dillon County | 6 |