14 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hutchinson | 1 | 39,339 | 40,005 | -0.28% | 1,547 | 25 | City |
| South Hutchinson | 2 | 2,496 | 2,525 | -0.2% | 878 | 3 | City |
| Buhler | 3 | 1,310 | 1,324 | -0.15% | 1,830 | 1 | City |
| Haven | 4 | 1,168 | 1,167 | 0% | 1,503 | 1 | City |
| Nickerson | 5 | 1,046 | 1,064 | -0.29% | 808 | 1 | City |
| Pretty Prairie | 6 | 647 | 659 | -0.31% | 1,123 | 1 | City |
| Arlington | 7 | 423 | 435 | -0.47% | 343 | 1 | City |
| The Highlands | 8 | 348 | 350 | 0% | 340 | 1 | City |
| Turon | 9 | 305 | 307 | 0% | 685 | 0 | City |
| Partridge | 10 | 212 | 209 | 0.47% | 684 | 0 | City |
| Sylvia | 11 | 212 | 212 | 0% | 734 | 0 | City |
| Plevna | 12 | 83 | 85 | 0% | 369 | 0 | City |
| Abbyville | 13 | 80 | 82 | 0% | 299 | 0 | City |
| Willowbrook | 14 | 69 | 71 | 0% | 234 | 0 | City |
Hutchinson is the largest city in Reno County, with a population of 39,339.
Willowbrook is the smallest city in Reno County, with a population of 69.
There are 14 cities in Reno County, Kansas.