3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Winnsboro | 1 | 3,222 | 3,393 | -0.86% | 563 | 6 | Town |
| Ridgeway | 2 | 250 | 265 | -0.79% | 515 | 0 | Town |
| Jenkinsville | 3 | 38 | 40 | 0% | 427 | 0 | Town |
Winnsboro is the largest city in Fairfield County, with a population of 3,222.
Jenkinsville is the smallest city in Fairfield County, with a population of 38.
There are 3 cities in Fairfield County, South Carolina.