1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Columbia | 1 | 4,648 | 4,830 | -0.79% | 954 | 5 | City |
Columbia is the largest city in Adair County, with a population of 4,648.
Columbia is the smallest city in Adair County, with a population of 4,648.
There is 1 city in Adair County, Kentucky.