8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Laurens | 1 | 9,238 | 9,363 | -0.27% | 905 | 10.21 | City |
| Clinton | 2 | 7,770 | 7,630 | 0.36% | 744 | 10.45 | City |
| Watts Mills | 3 | 2,108 | 1,970 | 1.54% | 929 | 2.27 | CDP |
| Joanna | 4 | 1,373 | 1,270 | -0.79% | 438 | 3.14 | CDP |
| Gray Court | 5 | 782 | 769 | 0.39% | 413 | 1.89 | Town |
| Cross Hill | 6 | 419 | 403 | 0.72% | 132 | 3.19 | Town |
| Waterloo | 7 | 156 | 151 | 0.65% | 87 | 1.78 | Town |
| Mountville | 8 | 142 | 75 | 1.43% | 50 | 2.86 | CDP |
Laurens is the largest city in Laurens County, with a population of 9,238.
Mountville is the smallest city in Laurens County.
There are 8 cities in Laurens County, South Carolina.