| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Holton | 1 | 3,395 | 3,400 | -0.03% | 1,269 | 3 | City |
| Hoyt | 2 | 593 | 595 | 0% | 1,264 | 0 | City |
| Mayetta | 3 | 353 | 350 | 0% | 1,918 | 0 | City |
| Whiting | 4 | 198 | 192 | 0.51% | 197 | 1 | City |
| Delia | 5 | 155 | 150 | 0.65% | 1,348 | 0 | City |
| Circleville | 6 | 148 | 150 | -0.67% | 585 | 0 | City |
| Denison | 7 | 143 | 145 | -0.69% | 1,277 | 0 | City |
| Netawaka | 8 | 138 | 140 | -0.72% | 143 | 1 | City |
| Soldier | 9 | 101 | 100 | 0% | 687 | 0 | City |
Holton is the largest city in Jackson County, with a population of 3,395.
Soldier is the smallest city in Jackson County, with a population of 101.
There are 9 cities in Jackson County, Kansas.