9 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Medford | 1 | 906 | 933 | -0.44% | 584 | 2 | City |
| Pond Creek | 2 | 892 | 895 | 0% | 1,051 | 1 | City |
| Wakita | 3 | 305 | 314 | -0.33% | 981 | 0 | Town |
| Lamont | 4 | 290 | 299 | -0.34% | 855 | 0 | Town |
| Nash | 5 | 186 | 189 | 0% | 560 | 0 | Town |
| Manchester | 6 | 90 | 89 | 0% | 372 | 0 | Town |
| Deer Creek | 7 | 74 | 76 | 0% | 521 | 0 | Town |
| Renfrow | 8 | 18 | 18 | 0% | 188 | 0 | Town |
| Jefferson | 9 | 10 | 10 | 0% | 37 | 0 | Town |
Medford is the largest city in Grant County, with a population of 906.
Jefferson is the smallest city in Grant County, with a population of 10.
There are 9 cities in Grant County, Oklahoma.