10 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ponca City | 1 | 24,165 | 24,371 | -0.14% | 1,329 | 18 | City |
| Blackwell | 2 | 5,990 | 6,067 | -0.22% | 1,073 | 6 | City |
| Tonkawa | 3 | 2,972 | 3,019 | -0.27% | 720 | 4 | City |
| Newkirk | 4 | 2,241 | 2,246 | -0.04% | 1,654 | 1 | City |
| Kaw City | 5 | 329 | 322 | 0.3% | 109 | 3 | City |
| Braman | 6 | 163 | 165 | 0% | 832 | 0 | Town |
| Kildare | 7 | 85 | 87 | 0% | 625 | 0 | Town |
| Webb City | 8 | 62 | 58 | 1.64% | 246 | 0 | Town |
| Grainola | 9 | 33 | 33 | 0% | 137 | 0 | Town |
| Foraker | 10 | 18 | 15 | 5.88% | 69 | 0 | Town |
Ponca City is the largest city in Kay County, with a population of 24,165.
Foraker is the smallest city in Kay County, with a population of 18.
There are 10 cities in Kay County, Oklahoma.