5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jackson | 1 | 3,240 | 3,320 | -0.49% | 624 | 5.19 | City |
| Lakefield | 2 | 1,707 | 1,732 | -0.29% | 1,276 | 1.34 | City |
| Heron Lake | 3 | 583 | 602 | -0.68% | 469 | 1.24 | City |
| Okabena | 4 | 207 | 207 | 0% | 612 | 0.34 | City |
| Alpha | 5 | 94 | 99 | -1.05% | 439 | 0.21 | City |
Jackson is the largest city in Jackson County, with a population of 3,240.
Alpha is the smallest city in Jackson County.
There are 5 cities in Jackson County, Minnesota.