20 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Soldier | 1 | 15,253 | 15,106 | 0.49% | 245 | 62 | Township |
| Soldier | 2 | 15,253 | 15,099 | 0.49% | 245 | 62 | Township |
| Holton | 3 | 3,427 | 3,400 | 0.15% | 1,281 | 3 | City |
| Holton | 4 | 3,427 | 3,401 | 0.15% | 1,281 | 3 | City |
| Hoyt | 5 | 596 | 594 | 0% | 1,271 | 0 | City |
| Hoyt | 6 | 596 | 594 | 0% | 1,271 | 0 | City |
| Mayetta | 7 | 361 | 350 | 0.56% | 1,962 | 0 | City |
| Mayetta | 8 | 361 | 350 | 0.56% | 1,962 | 0 | City |
| Whiting | 9 | 197 | 189 | 0.51% | 196 | 1 | City |
| Whiting | 10 | 197 | 189 | 0.51% | 196 | 1 | City |
| Circleville | 11 | 154 | 154 | 0% | 609 | 0 | City |
| Circleville | 12 | 154 | 154 | 0% | 609 | 0 | City |
| Delia | 13 | 153 | 150 | 0% | 1,330 | 0 | City |
| Delia | 14 | 153 | 150 | 0% | 1,330 | 0 | City |
| Denison | 15 | 147 | 145 | 0% | 1,313 | 0 | City |
| Denison | 16 | 147 | 145 | 0% | 1,313 | 0 | City |
| Netawaka | 17 | 141 | 141 | 0% | 146 | 1 | City |
| Netawaka | 18 | 141 | 141 | 0% | 146 | 1 | City |
| Soldier | 19 | 104 | 102 | 0% | 707 | 0 | City |
| Soldier | 20 | 104 | 102 | 0% | 707 | 0 | City |
Soldier is the largest city in Jackson County, with a population of 15,253.
Soldier is the smallest city in Jackson County, with a population of 104.
There are 20 cities in Jackson County, Kansas.