| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| La Crosse | 1 | 1,214 | 1,263 | -0.9% | 1,172 | 1 | City |
| Otis | 2 | 283 | 296 | -1.05% | 904 | 0 | City |
| Bison | 3 | 166 | 176 | -1.19% | 626 | 0 | City |
| Rush Center | 4 | 135 | 139 | -0.74% | 374 | 0 | City |
| Liebenthal | 5 | 91 | 94 | -1.09% | 813 | 0 | City |
| Alexander | 6 | 46 | 50 | -2.13% | 178 | 0 | City |
La Crosse is the largest city in Rush County, with a population of 1,214.
Alexander is the smallest city in Rush County, with a population of 46.
There are 6 cities in Rush County, Kansas.