11 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ardmore | 1 | 25,231 | 24,730 | 0.33% | 506 | 50 | City |
| Lone Grove | 2 | 5,413 | 5,002 | 1.29% | 218 | 25 | City |
| Healdton | 3 | 2,388 | 2,351 | 0.25% | 149 | 16 | City |
| Wilson | 4 | 1,465 | 1,405 | 0.69% | 260 | 6 | City |
| Dickson | 5 | 1,392 | 1,332 | 0.72% | 100 | 14 | Town |
| Oakland | 6 | 951 | 846 | 1.93% | 665 | 1 | Town |
| Springer | 7 | 717 | 687 | 0.7% | 48 | 15 | Town |
| Gene Autry | 8 | 160 | 154 | 0.63% | 40 | 4 | Town |
| Tatums | 9 | 121 | 115 | 0.83% | 60 | 2 | Town |
| Cornish | 10 | 113 | 112 | 0% | 188 | 1 | Town |
| Ratliff City | 11 | 65 | 64 | 0% | 58 | 1 | Town |
Ardmore is the largest city in Carter County, with a population of 25,231.
Ratliff City is the smallest city in Carter County, with a population of 65.
There are 11 cities in Carter County, Oklahoma.