13 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cimarron | 1 | 2,396 | 2,428 | -1.07% | 24 | 98 | Township |
| Cimarron | 2 | 1,981 | 1,969 | 0.1% | 1,720 | 1 | City |
| Montezuma | 3 | 1,577 | 1,523 | 0.45% | 8 | 199 | Township |
| Montezuma | 4 | 1,005 | 972 | 0.6% | 990 | 1 | City |
| Ingalls | 5 | 568 | 575 | -1.22% | 4 | 135 | Township |
| Copeland | 6 | 516 | 515 | -0.58% | 6 | 90 | Township |
| East Hess | 7 | 319 | 319 | -0.93% | 3 | 108 | Township |
| Ingalls | 8 | 251 | 254 | 0% | 965 | 0 | City |
| Copeland | 9 | 250 | 253 | 0% | 1,073 | 0 | City |
| Ensign | 10 | 162 | 167 | -0.61% | 557 | 0 | City |
| Foote | 11 | 105 | 105 | -0.94% | 1 | 119 | Township |
| Cimarron | 12 | 77 | 83 | -1.28% | 1 | 117 | Township |
| Cimarron | 13 | 49 | 60 | -5.77% | 1 | 67 | Township |
Cimarron is the largest city in Gray County, with a population of 2,396.
Cimarron is the smallest city in Gray County, with a population of 49.
There are 13 cities in Gray County, Kansas.