43 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Stilwell | 1 | 3,892 | 3,716 | 0.96% | 1,111 | 4 | City |
| Stilwell | 2 | 3,892 | 3,707 | 0.96% | 1,111 | 4 | City |
| Westville | 3 | 1,422 | 1,412 | 0.14% | 757 | 2 | Town |
| Westville | 4 | 1,422 | 1,409 | 0.14% | 757 | 2 | Town |
| West Siloam Springs | 5 | 1,076 | 1,033 | 0.75% | 274 | 4 | Town |
| West Siloam Springs | 6 | 1,076 | 1,034 | 0.75% | 274 | 4 | Town |
| Flint Creek | 7 | 1,028 | 735 | 1.98% | 161 | 6 | CDP |
| Remy | 8 | 729 | 658 | 1.53% | 57 | 13 | CDP |
| Cherry Tree | 9 | 687 | 1,058 | -1.86% | 60 | 12 | CDP |
| Rocky Mountain | 10 | 643 | 682 | 2.39% | 42 | 15 | CDP |
| Lyons Switch | 11 | 640 | 612 | 3.73% | 50 | 13 | CDP |
| Old Green | 12 | 574 | 526 | 3.24% | 183 | 3 | CDP |
| Fairfield | 13 | 523 | 714 | -0.76% | 107 | 5 | CDP |
| Baron | 14 | 488 | 228 | 7.25% | 83 | 6 | CDP |
| Wauhillau | 15 | 426 | 420 | 1.19% | 44 | 10 | CDP |
| Chewey | 16 | 399 | 395 | 4.72% | 16 | 26 | CDP |
| Chance | 17 | 396 | 247 | 7.03% | 63 | 6 | CDP |
| Long | 18 | 395 | 330 | 0.51% | 52 | 8 | CDP |
| Titanic | 19 | 394 | 419 | 0.77% | 74 | 5 | CDP |
| Nicut | 20 | 345 | 312 | -0.29% | 21 | 16 | CDP |
| Liberty | 21 | 342 | 179 | 6.88% | 148 | 2 | CDP |
| Bell | 22 | 295 | 390 | -5.14% | 63 | 5 | CDP |
| Peavine | 23 | 292 | 361 | -2.67% | 31 | 9 | CDP |
| Watts | 24 | 278 | 272 | 0.36% | 523 | 1 | Town |
| Watts | 25 | 278 | 271 | 0.36% | 523 | 1 | Town |
| Honey Hill | 26 | 229 | 168 | 7.01% | 78 | 3 | CDP |
| Short | 27 | 228 | 182 | -1.72% | 21 | 11 | CDP |
| Cloud Creek | 28 | 227 | 381 | 3.18% | 15 | 15 | CDP |
| Belfonte | 29 | 213 | 402 | -5.33% | 27 | 8 | CDP |
| Greasy | 30 | 188 | 260 | -6% | 19 | 10 | CDP |
| Proctor | 31 | 182 | 378 | -2.15% | 17 | 11 | CDP |
| Bull Hollow | 32 | 156 | 125 | 6.85% | 29 | 5 | CDP |
| Elm Grove | 33 | 143 | 342 | -2.72% | 59 | 2 | CDP |
| Pumpkin Hollow | 34 | 124 | 166 | 6.9% | 8 | 15 | CDP |
| Christie | 35 | 114 | 155 | -5.79% | 12 | 10 | CDP |
| West Peavine | 36 | 109 | 301 | -6.03% | 14 | 8 | CDP |
| Cave Spring | 37 | 95 | 80 | 6.74% | 20 | 5 | CDP |
| Flute Springs | 38 | 89 | 128 | -3.26% | 21 | 4 | CDP |
| Dripping Springs | 39 | 58 | 54 | 7.41% | 42 | 1 | CDP |
| Mulberry | 40 | 48 | 98 | -11.11% | 51 | 1 | CDP |
| Bunch | 41 | 46 | 49 | 6.98% | 3 | 15 | CDP |
| Elohim City | 42 | 46 | 33 | 6.98% | 50 | 1 | CDP |
| Zion | 43 | 45 | 35 | 7.14% | 44 | 1 | CDP |
Stilwell is the largest city in Adair County, with a population of 3,892.
Zion is the smallest city in Adair County, with a population of 45.
There are 43 cities in Adair County, Oklahoma.