4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bay Springs | 1 | 1,559 | 1,659 | -1.27% | 104 | 15 | City |
| Heidelberg | 2 | 602 | 637 | -1.15% | 118 | 5 | Town |
| Louin | 3 | 260 | 275 | -1.14% | 43 | 6 | Town |
| Montrose | 4 | 100 | 104 | -0.99% | 37 | 3 | Town |
Bay Springs is the largest city in Jasper County, with a population of 1,559.
Montrose is the smallest city in Jasper County, with a population of 100.
There are 4 cities in Jasper County, Mississippi.