4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bluffton | 1 | 40,057 | 28,324 | 5.13% | 768 | 52 | Town |
| Hilton Head Island | 2 | 38,444 | 37,586 | 0.37% | 930 | 41 | Town |
| Port Royal | 3 | 17,470 | 14,581 | 2.84% | 905 | 19 | Town |
| Beaufort | 4 | 14,688 | 13,625 | 1.22% | 601 | 24 | City |
Bluffton is the largest city in Beaufort County, with a population of 40,057.
Beaufort is the smallest city in Beaufort County, with a population of 14,688.
There are 4 cities in Beaufort County, South Carolina.