13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Cimarron township | 1 | 2,489 | 2,436 | 0.4% | 25 | 98.35 | Township |
| Cimarron | 2 | 2,006 | 1,976 | 0.3% | 1,741 | 1.15 | City |
| Montezuma township | 3 | 1,562 | 1,523 | 0.51% | 8 | 198.51 | Township |
| Montezuma | 4 | 978 | 972 | 0.1% | 964 | 1.01 | City |
| Ingalls township | 5 | 599 | 575 | 1.01% | 4 | 134.73 | Township |
| Copeland township | 6 | 528 | 512 | 0.57% | 6 | 90.14 | Township |
| East Hess township | 7 | 332 | 319 | 0.61% | 3 | 108.31 | Township |
| Ingalls | 8 | 252 | 252 | 0% | 969 | 0.26 | City |
| Copeland | 9 | 251 | 251 | 0% | 1,077 | 0.23 | City |
| Ensign | 10 | 169 | 166 | 0.6% | 581 | 0.29 | City |
| Foote township | 11 | 108 | 106 | 0% | 1 | 119.50 | Township |
| Cimarron township | 12 | 80 | 83 | 0% | 1 | 116.92 | Township |
| Cimarron township | 13 | 50 | 52 | 0% | 1 | 66.89 | Township |
Cimarron township is the largest city in Gray County, with a population of 2,489.
Cimarron township is the smallest city in Gray County.
There are 13 cities in Gray County, Kansas.