2 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hattiesburg | 1 | 48,407 | 48,752 | -0.12% | 906 | 53 | City |
| Petal | 2 | 11,773 | 11,068 | 1.01% | 696 | 17 | City |
Hattiesburg is the largest city in Forrest County, with a population of 48,407.
Petal is the smallest city in Forrest County, with a population of 11,773.
There are 2 cities in Forrest County, Mississippi.