Barnwell County, South Carolina Cities (2025)

5 cities

City
Rank
2025 Pop.
2020 Pop.
Change
Density
Area (mi²)
Type
Barnwell14,5314,646-0.51%5787.84 City
Williston22,8412,890-0.35%3178.95 Town
Blackville31,8941,926-0.32%2128.93 Town
Hilda44234200.24%1383.07 Town
Elko51411400%1341.05 Town

Barnwell County Cities Summary

Largest City

Barnwell is the largest city in Barnwell County, with a population of 4,531.

Smallest City

Elko is the smallest city in Barnwell County.

10 Largest Cities

There are 5 cities in Barnwell County, South Carolina.

Location of Barnwell County