4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Pascagoula | 1 | 21,352 | 21,969 | -0.58% | 1,389 | 15 | City |
| Ocean Springs | 2 | 19,100 | 18,369 | 0.77% | 1,654 | 12 | City |
| Gautier | 3 | 19,064 | 19,017 | 0.05% | 630 | 30 | City |
| Moss Point | 4 | 11,707 | 12,125 | -0.71% | 486 | 24 | City |
Pascagoula is the largest city in Jackson County, with a population of 21,352.
Moss Point is the smallest city in Jackson County, with a population of 11,707.
There are 4 cities in Jackson County, Mississippi.