2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Parksville | 1 | 132 | 119 | 1.54% | 181 | 1 | Town |
| Plum Branch | 2 | 82 | 79 | 0% | 111 | 1 | Town |
Parksville is the largest city in McCormick County, with a population of 132.
Plum Branch is the smallest city in McCormick County, with a population of 82.
There are 2 cities in McCormick County, South Carolina.