4 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Erwin | 1 | 5,939 | 6,064 | -0.42% | 1,439 | 4.13 | Town |
| Unicoi | 2 | 3,814 | 3,824 | -0.05% | 236 | 16.19 | Town |
| Banner Hill | 3 | 1,590 | 1,396 | 0.44% | 1,137 | 1.40 | CDP |
| Embreeville | 4 | 1,248 | 1,032 | 7.22% | 929 | 1.34 | CDP |
Erwin is the largest city in Unicoi County, with a population of 5,939.
Embreeville is the smallest city in Unicoi County.
There are 4 cities in Unicoi County, Tennessee.