18 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Russell | 1 | 4,407 | 4,389 | 0.09% | 907 | 4.86 | City |
| Big Creek township | 2 | 547 | 537 | 0% | 8 | 72.17 | Township |
| Gorham | 3 | 388 | 375 | 0.78% | 1,623 | 0.24 | City |
| Lucas | 4 | 341 | 333 | 0.59% | 561 | 0.61 | City |
| Plymouth township | 5 | 228 | 229 | -0.44% | 2 | 98.71 | Township |
| Center township | 6 | 218 | 216 | -0.46% | 2 | 138.88 | Township |
| Luray township | 7 | 207 | 211 | -0.96% | 3 | 70.83 | Township |
| Grant township | 8 | 177 | 173 | 0% | 3 | 51.76 | Township |
| Luray | 9 | 164 | 164 | 0% | 494 | 0.33 | City |
| Dorrance | 10 | 142 | 144 | 0% | 419 | 0.34 | City |
| Paradise township | 11 | 124 | 122 | 0% | 1 | 144.03 | Township |
| Bunker Hill | 12 | 111 | 108 | 0.91% | 80 | 1.39 | City |
| Waldo township | 13 | 95 | 92 | 1.06% | 1 | 71.98 | Township |
| Russell township | 14 | 88 | 87 | 0% | 2 | 49.45 | Township |
| Winterset township | 15 | 55 | 55 | 0% | 2 | 36.11 | Township |
| Paradise | 16 | 33 | 33 | 0% | 134 | 0.25 | City |
| Waldo | 17 | 32 | 31 | 0% | 85 | 0.38 | City |
| Fairfield township | 18 | 24 | 24 | 0% | 1 | 40.20 | Township |
Russell is the largest city in Russell County, with a population of 4,407.
Fairfield township is the smallest city in Russell County.
There are 18 cities in Russell County, Kansas.