Allendale County, South Carolina Cities (2025)

6 cities

City
Rank
2025 Pop. ↓
2020 Pop.
Change
Density
Area (mi²)
Type
Allendale12,3622,681-2.64%7143.31 Town
Fairfax21,3151,487-2.52%3973.31 Town
Snelling32502500%624.04 Town
Kline41441460%463.11 Town
Sycamore5132151-2.94%423.17 Town
Ulmer65564-3.51%202.74 Town

Allendale County Cities Summary

Largest City

Allendale is the largest city in Allendale County, with a population of 2,362.

Smallest City

Ulmer is the smallest city in Allendale County.

10 Largest Cities

There are 6 cities in Allendale County, South Carolina.