2 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Parksville | 1 | 135 | 119 | 2.27% | 185 | 1 | Town |
| Plum Branch | 2 | 83 | 79 | 1.22% | 112 | 1 | Town |
Parksville is the largest city in McCormick County, with a population of 135.
Plum Branch is the smallest city in McCormick County, with a population of 83.
There are 2 cities in McCormick County, South Carolina.