| Zip Code | City | Population ↓ |
|---|---|---|
| 29550 | Hartsville | 29,776 |
| 29532 | Darlington | 20,000 |
| 29069 | Lamar | 4,460 |
| 29540 | Darlington | 4,419 |
| 29593 | Society Hill | 1,990 |
| 29079 | Lydia | 14 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Darlington County, South Carolina (US Census).