9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hays | 1 | 20,982 | 21,126 | -0.14% | 2,428 | 8.64 | City |
| Ellis | 2 | 1,895 | 1,960 | -0.68% | 1,144 | 1.66 | City |
| Victoria | 3 | 1,100 | 1,129 | -0.54% | 1,836 | 0.60 | City |
| Catharine | 4 | 243 | 123 | 3.85% | 137 | 1.77 | CDP |
| Schoenchen | 5 | 168 | 170 | 0% | 1,355 | 0.12 | City |
| McCracken | 6 | 140 | 150 | -1.41% | 140 | 1 | City |
| Zurich | 7 | 78 | 85 | -1.27% | 433 | 0.18 | City |
| Codell | 8 | 62 | 77 | 6.9% | 82 | 0.75 | CDP |
| Munjor | 9 | 59 | 76 | -15.71% | 26 | 2.31 | CDP |
Hays is the largest city in Ellis County, with a population of 20,982.
Munjor is the smallest city in Ellis County.
There are 9 cities in Ellis County, Kansas.