18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newport | 1 | 8,057 | 8,013 | 0.1% | 595 | 14 | City |
| Newport | 2 | 8,057 | 8,016 | 0.1% | 595 | 14 | City |
| Tuckerman | 3 | 1,654 | 1,704 | -0.6% | 618 | 3 | City |
| Tuckerman | 4 | 1,654 | 1,703 | -0.6% | 618 | 3 | City |
| Diaz | 5 | 1,208 | 1,222 | -0.25% | 204 | 6 | City |
| Diaz | 6 | 1,208 | 1,223 | -0.25% | 204 | 6 | City |
| Swifton | 7 | 705 | 723 | -0.56% | 1,303 | 1 | City |
| Swifton | 8 | 705 | 722 | -0.56% | 1,303 | 1 | City |
| Grubbs | 9 | 301 | 304 | -0.33% | 532 | 1 | City |
| Grubbs | 10 | 301 | 304 | -0.33% | 532 | 1 | City |
| Jacksonport | 11 | 154 | 156 | -0.65% | 410 | 0 | Town |
| Jacksonport | 12 | 154 | 156 | -0.65% | 410 | 0 | Town |
| Beedeville | 13 | 81 | 84 | -1.22% | 71 | 1 | Town |
| Beedeville | 14 | 81 | 84 | -1.22% | 71 | 1 | Town |
| Tupelo | 15 | 69 | 71 | -1.43% | 248 | 0 | Town |
| Tupelo | 16 | 69 | 71 | -1.43% | 248 | 0 | Town |
| Amagon | 17 | 66 | 66 | 0% | 595 | 0 | Town |
| Amagon | 18 | 66 | 66 | 0% | 595 | 0 | Town |
Newport is the largest city in Jackson County, with a population of 8,057.
Amagon is the smallest city in Jackson County, with a population of 66.
There are 18 cities in Jackson County, Arkansas.