Union County, South Carolina Cities (2025)

6 cities

City
Rank
2025 Pop.
2020 Pop.
Change
Density
Area (mi²)
Type
Union17,7058,144-1.13%9647.99 City
Monarch Mill21,7551,264-0.17%3135.61 CDP
Buffalo31,1321,020-0.79%2814.02 CDP
Jonesville4802849-1.11%7901.01 Town
Lockhart5362381-1.09%1,1870.30 Town
Carlisle6312319-0.32%2201.42 Town