6 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| La Crosse | 1 | 1,180 | 1,264 | -1.17% | 1,139 | 1 | City |
| Otis | 2 | 275 | 296 | -1.08% | 879 | 0 | City |
| Bison | 3 | 164 | 178 | -1.2% | 619 | 0 | City |
| Rush Center | 4 | 128 | 139 | -1.54% | 355 | 0 | City |
| Liebenthal | 5 | 87 | 92 | -1.14% | 777 | 0 | City |
| Alexander | 6 | 47 | 50 | 0% | 181 | 0 | City |
La Crosse is the largest city in Rush County, with a population of 1,180.
Alexander is the smallest city in Rush County, with a population of 47.
There are 6 cities in Rush County, Kansas.