6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Osage | 1 | 3,524 | 3,629 | -0.48% | 1,572 | 2 | City |
| St. Ansgar | 2 | 1,173 | 1,170 | 0.09% | 1,077 | 1 | City |
| Stacyville | 3 | 426 | 455 | -1.16% | 827 | 1 | City |
| McIntire | 4 | 116 | 112 | 0.87% | 115 | 1 | City |
| Carpenter | 5 | 93 | 89 | 1.09% | 265 | 0 | City |
| Orchard | 6 | 65 | 62 | 1.56% | 644 | 0 | City |
Osage is the largest city in Mitchell County, with a population of 3,524.
Orchard is the smallest city in Mitchell County, with a population of 65.
There are 6 cities in Mitchell County, Iowa.