9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Newport | 1 | 8,139 | 8,013 | 0.31% | 601 | 13.55 | City |
| Tuckerman | 2 | 1,669 | 1,703 | -0.42% | 624 | 2.68 | City |
| Diaz | 3 | 1,217 | 1,224 | -0.08% | 206 | 5.92 | City |
| Swifton | 4 | 716 | 725 | -0.28% | 1,323 | 0.54 | City |
| Grubbs | 5 | 304 | 304 | 0% | 537 | 0.57 | City |
| Jacksonport | 6 | 148 | 148 | 0% | 394 | 0.38 | Town |
| Beedeville | 7 | 82 | 84 | 0% | 72 | 1.14 | Town |
| Tupelo | 8 | 70 | 72 | 0% | 252 | 0.28 | Town |
| Amagon | 9 | 64 | 66 | 0% | 577 | 0.11 | Town |
Newport is the largest city in Jackson County, with a population of 8,139.
Amagon is the smallest city in Jackson County.
There are 9 cities in Jackson County, Arkansas.