| Localité | Code postal |
|---|---|
| Cypress Crossroads, Darlington | 29069 |
| Darlington, Darlington | 29532, 29540 |
| Hartsville, Darlington | 29550 |
| Lamar, Darlington | 29069 |
| Lydia, Darlington | 29079 |
| Oats, Darlington | 29069 |
| Society Hill, Darlington | 29593 |
| Timmonsville, Darlington | 29161 |