| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Pratt | 1 | 6,568 | 6,593 | -0.09% | 852 | 8 | City |
| Iuka | 2 | 151 | 151 | 0% | 230 | 1 | City |
| Preston | 3 | 116 | 116 | 0% | 267 | 0 | City |
| Sawyer | 4 | 87 | 88 | 0% | 483 | 0 | City |
| Cullison | 5 | 86 | 86 | 0% | 497 | 0 | City |
| Coats | 6 | 65 | 66 | -1.52% | 286 | 0 | City |
| Seward | 7 | 42 | 43 | -2.33% | 163 | 0 | City |
| Langdon | 8 | 41 | 39 | 0% | 414 | 0 | City |
| Byers | 9 | 37 | 37 | 0% | 219 | 0 | City |
Pratt is the largest city in Pratt County, with a population of 6,568.
Byers is the smallest city in Pratt County, with a population of 37.
There are 9 cities in Pratt County, Kansas.