13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cimarron | 1 | 2,489 | 2,436 | 0.4% | 25 | 98 | Township |
| Cimarron | 2 | 2,006 | 1,976 | 0.3% | 1,741 | 1 | City |
| Montezuma | 3 | 1,562 | 1,523 | 0.51% | 8 | 199 | Township |
| Montezuma | 4 | 978 | 972 | 0.1% | 964 | 1 | City |
| Ingalls | 5 | 599 | 575 | 1.01% | 4 | 135 | Township |
| Copeland | 6 | 528 | 512 | 0.57% | 6 | 90 | Township |
| East Hess | 7 | 332 | 319 | 0.61% | 3 | 108 | Township |
| Ingalls | 8 | 252 | 252 | 0% | 969 | 0 | City |
| Copeland | 9 | 251 | 251 | 0% | 1,077 | 0 | City |
| Ensign | 10 | 169 | 166 | 0.6% | 581 | 0 | City |
| Foote | 11 | 108 | 106 | 0% | 1 | 119 | Township |
| Cimarron | 12 | 80 | 83 | 0% | 1 | 117 | Township |
| Cimarron | 13 | 50 | 52 | 0% | 1 | 67 | Township |
Cimarron is the largest city in Gray County, with a population of 2,489.
Cimarron is the smallest city in Gray County, with a population of 50.
There are 13 cities in Gray County, Kansas.