There are 19 cities in Sumner County, Kansas.
Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | State | 2024 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Wichita | 1 | Kansas | 394,381 | 398,003 | -0.23% | 2,420 | 162.94 |
| Wellington | 2 | Kansas | 7,600 | 7,680 | -0.26% | 998 | 7.62 |
| Mulvane | 3 | Kansas | 7,226 | 6,300 | 3.32% | 1,712 | 4.22 |
| Clearwater | 4 | Kansas | 2,622 | 2,662 | -0.38% | 1,337 | 1.96 |
| Belle Plaine | 5 | Kansas | 1,465 | 1,471 | -0.07% | 1,765 | 0.83 |
| Conway Springs | 6 | Kansas | 1,136 | 1,094 | 0.98% | 1,151 | 0.99 |
| Oxford | 7 | Kansas | 1,051 | 1,045 | 0.19% | 1,160 | 0.91 |
| Caldwell | 8 | Kansas | 1,010 | 1,024 | -0.3% | 934 | 1.08 |
| Udall | 9 | Kansas | 645 | 661 | -0.62% | 1,183 | 0.55 |
| Argonia | 10 | Kansas | 451 | 459 | -0.44% | 646 | 0.70 |
| Norwich | 11 | Kansas | 410 | 440 | -1.68% | 1,020 | 0.40 |
| South Haven | 12 | Kansas | 328 | 326 | 0.31% | 328 | 1 |
| Geuda Springs | 13 | Kansas | 156 | 154 | 0.65% | 453 | 0.34 |
| Mayfield | 14 | Kansas | 75 | 73 | 1.35% | 253 | 0.30 |
| Milan | 15 | Kansas | 53 | 53 | 0% | 402 | 0.13 |
| Peck | 16 | Kansas | 46 | 118 | -28.13% | 130 | 0.35 |
| Bluff City | 17 | Kansas | 43 | 45 | 0% | 85 | 0.51 |
| Hunnewell | 18 | Kansas | 42 | 42 | 0% | 76 | 0.56 |
| Milton | 19 | Kansas | 0 | 299 | 0% | 0 | 4.44 |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Wichita is the largest city in Sumner County.
Milton is the smallest city in Sumner County.
There are 19 cities in Sumner County, Kansas.