4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Kingstree | 1 | 2,966 | 3,231 | -1.76% | 933 | 3.18 | Town |
| Hemingway | 2 | 453 | 500 | -1.95% | 524 | 0.86 | Town |
| Lane | 3 | 442 | 472 | -1.34% | 112 | 3.95 | Town |
| Greeleyville | 4 | 352 | 381 | -1.68% | 288 | 1.22 | Town |
Kingstree is the largest city in Williamsburg County, with a population of 2,966.
Greeleyville is the smallest city in Williamsburg County.
There are 4 cities in Williamsburg County, South Carolina.