5 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jackson | 1 | 3,217 | 3,321 | -0.53% | 620 | 5 | City |
| Lakefield | 2 | 1,698 | 1,734 | -0.35% | 1,269 | 1 | City |
| Heron Lake | 3 | 586 | 603 | -0.51% | 472 | 1 | City |
| Okabena | 4 | 199 | 204 | -0.5% | 589 | 0 | City |
| Alpha | 5 | 95 | 98 | 0% | 444 | 0 | City |
Jackson is the largest city in Jackson County, with a population of 3,217.
Alpha is the smallest city in Jackson County, with a population of 95.
There are 5 cities in Jackson County, Minnesota.