26 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Belleville | 1 | 1,979 | 1,999 | -0.2% | 963 | 2.06 | City |
| Belleville township | 2 | 499 | 513 | -1.19% | 8 | 59.32 | Township |
| Scandia township | 3 | 408 | 418 | -0.73% | 11 | 35.63 | Township |
| Courtland township | 4 | 379 | 386 | -0.52% | 10 | 36.14 | Township |
| Scandia | 5 | 334 | 341 | -0.3% | 709 | 0.47 | City |
| Courtland | 6 | 289 | 293 | -0.34% | 1,074 | 0.27 | City |
| Belleville township | 7 | 201 | 206 | -0.5% | 6 | 34.18 | Township |
| Richland township | 8 | 192 | 201 | -1.54% | 5 | 35.77 | Township |
| Cuba | 9 | 137 | 139 | 0% | 476 | 0.29 | City |
| Albion township | 10 | 130 | 132 | 0% | 4 | 35.69 | Township |
| Freedom township | 11 | 128 | 137 | -2.29% | 4 | 34.63 | Township |
| Big Bend township | 12 | 125 | 129 | -0.79% | 4 | 35.70 | Township |
| Norway township | 13 | 125 | 128 | -0.79% | 4 | 35.66 | Township |
| Elk Creek township | 14 | 110 | 111 | 0% | 3 | 35.83 | Township |
| Rose Creek township | 15 | 107 | 107 | 0% | 3 | 36.41 | Township |
| Beaver township | 16 | 99 | 102 | -1% | 3 | 35.23 | Township |
| Munden | 17 | 97 | 97 | 0% | 522 | 0.19 | City |
| Jefferson township | 18 | 88 | 91 | -1.12% | 2 | 36.55 | Township |
| Narka | 19 | 79 | 83 | -1.25% | 494 | 0.16 | City |
| Republic | 20 | 77 | 81 | -1.28% | 330 | 0.23 | City |
| White Rock township | 21 | 74 | 74 | 0% | 2 | 35.81 | Township |
| Grant township | 22 | 59 | 59 | 0% | 2 | 36.50 | Township |
| Farmington township | 23 | 49 | 49 | 0% | 1 | 35.79 | Township |
| Agenda | 24 | 43 | 45 | 0% | 249 | 0.17 | City |
| Union township | 25 | 30 | 30 | 0% | 1 | 35.83 | Township |
| Norway | 26 | 11 | 16 | 10% | 5 | 2.27 | CDP |
Belleville is the largest city in Republic County, with a population of 1,979.
Norway is the smallest city in Republic County.
There are 26 cities in Republic County, Kansas.