16 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Hill City | 1 | 1,479 | 1,520 | -0.87% | 34 | 43.25 | Township |
| Hill City | 2 | 1,374 | 1,401 | -0.36% | 817 | 1.68 | City |
| Wildhorse | 3 | 220 | 224 | -0.45% | 4 | 53.06 | Township |
| Bogue | 4 | 150 | 152 | 0% | 579 | 0.26 | City |
| Morland | 5 | 112 | 114 | 0% | 234 | 0.48 | City |
| Millbrook | 6 | 112 | 114 | 0% | 2 | 61.55 | Township |
| Gettysburg | 7 | 62 | 65 | -1.59% | 1 | 87.79 | Township |
| Bryant | 8 | 60 | 63 | -1.64% | 1 | 90 | Township |
| Morlan | 9 | 54 | 57 | -1.82% | 0.00 | 110.48 | Township |
| Graham | 10 | 52 | 55 | -1.89% | 1 | 71.83 | Township |
| Happy | 11 | 50 | 53 | -1.96% | 1 | 90 | Township |
| Allodium | 12 | 31 | 31 | 0% | 0.00 | 67.48 | Township |
| Indiana | 13 | 29 | 29 | 0% | 0.00 | 67.10 | Township |
| Edmond | 14 | 26 | 28 | 0% | 157 | 0.17 | City |
| Nicodemus | 15 | 25 | 28 | -3.85% | 1 | 32.40 | Township |
| Pioneer | 16 | 20 | 20 | 0% | 0.00 | 62.17 | Township |
Hill City is the largest city in Graham County, with a population of 1,479.
Pioneer is the smallest city in Graham County, with a population of 20.
There are 16 cities in Graham County, Kansas.