8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jasper | 1 | 7,850 | 6,899 | 2.48% | 751 | 10 | City |
| Kirbyville | 2 | 2,028 | 2,023 | 0.05% | 839 | 2 | City |
| Buna | 3 | 1,850 | 1,908 | -1.02% | 309 | 6 | CDP |
| Sam Rayburn | 4 | 1,238 | 1,036 | 0.24% | 148 | 8 | CDP |
| Evadale | 5 | 733 | 1,648 | -6.39% | 44 | 17 | CDP |
| Pine Forest | 6 | 506 | 500 | 0.2% | 180 | 3 | City |
| Rose City | 7 | 351 | 326 | 1.45% | 232 | 2 | City |
| Browndell | 8 | 154 | 158 | -0.65% | 63 | 2 | City |
Jasper is the largest city in Jasper County, with a population of 7,850.
Browndell is the smallest city in Jasper County, with a population of 154.
There are 8 cities in Jasper County, Texas.