| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Barbourville | 1 | 3,030 | 3,221 | -1.11% | 1,141 | 3 | City |
Barbourville is the largest city in Knox County, with a population of 3,030.
Barbourville is the smallest city in Knox County, with a population of 3,030.
There is 1 city in Knox County, Kentucky.