8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Garnett | 1 | 3,168 | 3,240 | -0.44% | 1,028 | 3.08 | City |
| Colony | 2 | 374 | 381 | -0.27% | 773 | 0.48 | City |
| Greeley | 3 | 276 | 271 | 0.36% | 802 | 0.34 | City |
| Welda | 4 | 172 | 100 | 1.77% | 186 | 0.93 | CDP |
| Westphalia | 5 | 130 | 129 | 0% | 657 | 0.20 | City |
| Kincaid | 6 | 107 | 106 | 0% | 214 | 0.50 | City |
| Mont Ida | 7 | 35 | 34 | 6.06% | 146 | 0.24 | CDP |
| Harris | 8 | 14 | 8 | 7.69% | 40 | 0.35 | CDP |
Garnett is the largest city in Anderson County, with a population of 3,168.
Harris is the smallest city in Anderson County.
There are 8 cities in Anderson County, Kansas.