| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wichita | 1 | 401,409 | 398,072 | 0.11% | 2,432 | 165 | City |
| Derby | 2 | 26,803 | 25,716 | 0.74% | 2,413 | 11 | City |
| Haysville | 3 | 11,378 | 11,274 | 0.22% | 2,426 | 5 | City |
| Bel Aire | 4 | 10,715 | 8,308 | 4.16% | 1,522 | 7 | City |
| Park City | 5 | 9,629 | 8,404 | 1.81% | 941 | 10 | City |
| Maize | 6 | 8,158 | 5,818 | 3.88% | 811 | 10 | City |
| Valley Center | 7 | 7,694 | 7,361 | 0.12% | 950 | 8 | City |
| Mulvane | 8 | 7,204 | 6,297 | 2.48% | 1,707 | 4 | City |
| Goddard | 9 | 6,849 | 5,133 | 3.18% | 1,214 | 6 | City |
| Clearwater | 10 | 2,799 | 2,662 | 0.25% | 1,427 | 2 | City |
| Kechi | 11 | 2,410 | 2,241 | 1.47% | 400 | 6 | City |
| Cheney | 12 | 2,174 | 2,183 | -0.18% | 938 | 2 | City |
| Colwich | 13 | 1,442 | 1,464 | -0.21% | 1,080 | 1 | City |
| Garden Plain | 14 | 1,020 | 947 | 0.99% | 905 | 1 | City |
| Andale | 15 | 923 | 938 | -0.32% | 1,551 | 1 | City |
| Mount Hope | 16 | 802 | 803 | -0.12% | 547 | 1 | City |
| Eastborough | 17 | 720 | 743 | -0.55% | 1,870 | 0 | City |
| Bentley | 18 | 589 | 560 | 0.51% | 1,938 | 0 | City |
| Viola | 19 | 111 | 115 | -0.89% | 677 | 0 | City |
Wichita is the largest city in Sedgwick County, with a population of 401,409.
Viola is the smallest city in Sedgwick County, with a population of 111.
There are 19 cities in Sedgwick County, Kansas.