There are 9 cities in Allendale County, South Carolina.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Barnwell | 1 | South Carolina | 4,554 | 4,646 | -0.5% | 581 | 7.84 |
| Allendale | 2 | South Carolina | 2,426 | 2,681 | -2.57% | 733 | 3.31 |
| Fairfax | 3 | South Carolina | 1,349 | 1,487 | -2.53% | 407 | 3.31 |
| Hilda | 4 | South Carolina | 422 | 420 | 0% | 137 | 3.07 |
| Snelling | 5 | South Carolina | 250 | 250 | 0% | 62 | 4.04 |
| Kline | 6 | South Carolina | 144 | 146 | -0.69% | 46 | 3.11 |
| Sycamore | 7 | South Carolina | 136 | 151 | -2.86% | 43 | 3.17 |
| Luray | 8 | South Carolina | 94 | 97 | -1.05% | 91 | 1.03 |
| Ulmer | 9 | South Carolina | 57 | 64 | -3.39% | 21 | 2.74 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Barnwell is the largest city in Allendale County.
Ulmer is the smallest city in Allendale County.
There are 9 cities in Allendale County, South Carolina.