19 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wichita | 1 | 402,453 | 398,067 | 0.18% | 2,438 | 165 | City |
| Derby | 2 | 27,048 | 25,715 | 0.83% | 2,435 | 11 | City |
| Haysville | 3 | 11,471 | 11,276 | 0.29% | 2,446 | 5 | City |
| Bel Aire | 4 | 10,945 | 8,308 | 4.19% | 1,554 | 7 | City |
| Park City | 5 | 9,464 | 8,402 | 1.91% | 925 | 10 | City |
| Maize | 6 | 7,681 | 5,814 | 4.22% | 764 | 10 | City |
| Valley Center | 7 | 7,442 | 7,364 | 0.17% | 919 | 8 | City |
| Mulvane | 8 | 7,374 | 6,299 | 2.49% | 1,747 | 4 | City |
| Goddard | 9 | 6,446 | 5,135 | 3.52% | 1,143 | 6 | City |
| Clearwater | 10 | 2,715 | 2,661 | 0.33% | 1,384 | 2 | City |
| Kechi | 11 | 2,459 | 2,245 | 1.49% | 408 | 6 | City |
| Cheney | 12 | 2,171 | 2,180 | -0.05% | 937 | 2 | City |
| Colwich | 13 | 1,449 | 1,463 | -0.14% | 1,085 | 1 | City |
| Garden Plain | 14 | 1,007 | 946 | 1% | 894 | 1 | City |
| Andale | 15 | 925 | 937 | -0.22% | 1,555 | 1 | City |
| Mount Hope | 16 | 802 | 807 | -0.12% | 547 | 1 | City |
| Eastborough | 17 | 736 | 757 | -0.41% | 1,912 | 0 | City |
| Bentley | 18 | 581 | 559 | 0.69% | 1,911 | 0 | City |
| Viola | 19 | 111 | 117 | -0.89% | 677 | 0 | City |
Wichita is the largest city in Sedgwick County, with a population of 402,453.
Viola is the smallest city in Sedgwick County, with a population of 111.
There are 19 cities in Sedgwick County, Kansas.