23 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Beloit | 1 | 3,334 | 3,394 | -0.36% | 851 | 3.92 | City |
| Cawker township | 2 | 505 | 510 | -0.2% | 17 | 29.22 | Township |
| Cawker City | 3 | 451 | 456 | -0.22% | 448 | 1.01 | City |
| Glen Elder township | 4 | 438 | 441 | 0% | 14 | 30.35 | Township |
| Glen Elder | 5 | 360 | 364 | -0.28% | 826 | 0.44 | City |
| Tipton | 6 | 188 | 190 | 0% | 746 | 0.25 | City |
| Beloit township | 7 | 168 | 173 | -0.59% | 5 | 32.24 | Township |
| Plum Creek township | 8 | 127 | 127 | 0% | 4 | 35.66 | Township |
| Turkey Creek township | 9 | 114 | 114 | 0% | 3 | 35.65 | Township |
| Custer township | 10 | 108 | 109 | 0% | 3 | 36.28 | Township |
| Asherville township | 11 | 92 | 93 | 0% | 3 | 36.29 | Township |
| Bloomfield township | 12 | 91 | 92 | 0% | 3 | 36.14 | Township |
| Simpson | 13 | 78 | 83 | -1.27% | 304 | 0.26 | City |
| Lulu township | 14 | 72 | 72 | 0% | 2 | 35.52 | Township |
| Hunter | 15 | 53 | 53 | 0% | 252 | 0.21 | City |
| Solomon Rapids township | 16 | 53 | 54 | 0% | 1 | 35.43 | Township |
| Center township | 17 | 46 | 46 | 0% | 1 | 35.87 | Township |
| Walnut Creek township | 18 | 40 | 40 | 0% | 1 | 34.10 | Township |
| Blue Hill township | 19 | 28 | 28 | 0% | 1 | 36.09 | Township |
| Salt Creek township | 20 | 21 | 21 | 0% | 1 | 35.81 | Township |
| Hayes township | 21 | 19 | 19 | 0% | 1 | 36.01 | Township |
| Round Springs township | 22 | 18 | 18 | 0% | 1 | 35.86 | Township |
| Carr Creek township | 23 | 14 | 14 | 0% | 0.00 | 33.16 | Township |
Beloit is the largest city in Mitchell County, with a population of 3,334.
Carr Creek township is the smallest city in Mitchell County.
There are 23 cities in Mitchell County, Kansas.