18 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alma | 1 | 1,265 | 1,183 | 1.36% | 32 | 40 | Township |
| Maple Hill | 2 | 1,197 | 1,159 | 0.34% | 16 | 73 | Township |
| Newbury | 3 | 1,127 | 1,079 | 0.63% | 14 | 78 | Township |
| Alma | 4 | 854 | 808 | 0.95% | 1,460 | 1 | City |
| Maple Hill | 5 | 642 | 632 | 0.31% | 2,642 | 0 | City |
| Plumb | 6 | 616 | 592 | 0.33% | 12 | 50 | Township |
| Wabaunsee | 7 | 602 | 574 | 0.33% | 9 | 66 | Township |
| Wilmington | 8 | 596 | 590 | 0% | 10 | 58 | Township |
| Mission Creek | 9 | 535 | 507 | 0.38% | 7 | 80 | Township |
| Eskridge | 10 | 437 | 437 | 0% | 845 | 1 | City |
| Alta Vista | 11 | 413 | 410 | 0.24% | 1,183 | 0 | City |
| McFarland | 12 | 281 | 277 | 0.36% | 1,579 | 0 | City |
| Kaw | 13 | 261 | 248 | 0.38% | 6 | 42 | Township |
| Mill Creek | 14 | 217 | 206 | 0.46% | 3 | 74 | Township |
| Paxico | 15 | 211 | 207 | 0.48% | 1,455 | 0 | City |
| Harveyville | 16 | 179 | 176 | 0.56% | 1,326 | 0 | City |
| Farmer | 17 | 79 | 74 | 1.28% | 1 | 66 | Township |
| Rock Creek | 18 | 50 | 48 | 0% | 1 | 66 | Township |
Alma is the largest city in Wabaunsee County, with a population of 1,265.
Rock Creek is the smallest city in Wabaunsee County, with a population of 50.
There are 18 cities in Wabaunsee County, Kansas.