1 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Columbia | 1 | 4,909 | 4,836 | 0.31% | 1,008 | 4.87 | City |
Columbia is the largest city in Adair County, with a population of 4,909.
Columbia is the smallest city in Adair County.
There is 1 city in Adair County, Kentucky.