City | 2024 Population |
|---|---|
| Hamer | 582 |
| Hampton | 2,578 |
| Hanahan | 22,187 |
| Harbor Island | 238 |
| Hardeeville | 13,288 |
| Harleyville | 733 |
| Hartsville | 7,388 |
| Heath Springs | 859 |
| Helena | 303 |
| Hemingway | 462 |
| Hickory Grove | 465 |
| Hilda | 422 |
| Hilltop | 3,437 |
| Hilton Head Island | 38,267 |
| Hodges | 163 |
| Holly Hill | 1,240 |
| Hollywood | 5,494 |
| Homeland Park | 8,332 |
| Homewood | 964 |
| Honea Path | 3,900 |
| Hopkins | 1,700 |