15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ardmore | 1 | 24,925 | 24,729 | 0.16% | 500 | 49.83 | City |
| Lone Grove | 2 | 5,310 | 5,009 | 1.14% | 214 | 24.84 | City |
| Healdton | 3 | 2,354 | 2,351 | 0.04% | 147 | 16.06 | City |
| Wilson | 4 | 1,439 | 1,406 | 0.49% | 255 | 5.64 | City |
| Dickson | 5 | 1,364 | 1,331 | 0.52% | 98 | 13.96 | Town |
| Cumberland | 6 | 936 | 869 | 7.09% | 735 | 1.27 | CDP |
| Oakland | 7 | 928 | 837 | 1.98% | 649 | 1.43 | Town |
| Springer | 8 | 703 | 687 | 0.43% | 47 | 14.92 | Town |
| Hennepin | 9 | 180 | 114 | 7.14% | 113 | 1.59 | CDP |
| Gene Autry | 10 | 159 | 154 | 0.63% | 39 | 4.04 | Town |
| Tatums | 11 | 118 | 115 | 0.85% | 59 | 2 | Town |
| Cornish | 12 | 113 | 110 | 0.89% | 188 | 0.60 | Town |
| Little City | 13 | 89 | 104 | 7.23% | 223 | 0.40 | CDP |
| Fox | 14 | 66 | 63 | 6.45% | 115 | 0.57 | CDP |
| Ratliff City | 15 | 64 | 64 | 0% | 57 | 1.12 | Town |
Ardmore is the largest city in Carter County, with a population of 24,925.
Ratliff City is the smallest city in Carter County.
There are 15 cities in Carter County, Oklahoma.