3 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 39401 | Hattiesburg | 41,916 |
| 39465 | Petal | 23,122 |
| 39406 | Hattiesburg | 1,902 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 3 ZCTAs in Forrest County, Mississippi (US Census).