23 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Beloit | 1 | 3,402 | 3,391 | 0.06% | 869 | 4 | City |
| Cawker | 2 | 521 | 511 | 0.77% | 18 | 29 | Township |
| Cawker City | 3 | 463 | 456 | 0.22% | 460 | 1 | City |
| Glen Elder | 4 | 442 | 436 | 0.23% | 15 | 30 | Township |
| Glen Elder | 5 | 364 | 357 | 0.28% | 835 | 0 | City |
| Tipton | 6 | 194 | 192 | 0% | 770 | 0 | City |
| Beloit | 7 | 179 | 179 | 0% | 6 | 32 | Township |
| Plum Creek | 8 | 125 | 127 | -1.57% | 4 | 36 | Township |
| Turkey Creek | 9 | 120 | 117 | 0.84% | 3 | 36 | Township |
| Custer | 10 | 106 | 107 | 0% | 3 | 36 | Township |
| Asherville | 11 | 99 | 97 | 1.02% | 3 | 36 | Township |
| Bloomfield | 12 | 95 | 93 | 1.06% | 3 | 36 | Township |
| Simpson | 13 | 81 | 83 | -1.22% | 315 | 0 | City |
| Lulu | 14 | 73 | 73 | 0% | 2 | 36 | Township |
| Solomon Rapids | 15 | 54 | 54 | 0% | 2 | 35 | Township |
| Hunter | 16 | 49 | 51 | -2% | 233 | 0 | City |
| Center | 17 | 46 | 46 | 0% | 1 | 36 | Township |
| Walnut Creek | 18 | 40 | 40 | 0% | 1 | 34 | Township |
| Blue Hill | 19 | 28 | 28 | 0% | 1 | 36 | Township |
| Hayes | 20 | 20 | 20 | 0% | 1 | 36 | Township |
| Round Springs | 21 | 18 | 18 | 0% | 1 | 36 | Township |
| Salt Creek | 22 | 16 | 16 | 0% | 0.00 | 36 | Township |
| Carr Creek | 23 | 14 | 14 | 0% | 0.00 | 33 | Township |
Beloit is the largest city in Mitchell County, with a population of 3,402.
Carr Creek is the smallest city in Mitchell County, with a population of 14.
There are 23 cities in Mitchell County, Kansas.