2 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Shelbyville | 1 | 18,109 | 17,346 | 0.85% | 1,960 | 9.24 | City |
| Simpsonville | 2 | 3,123 | 2,985 | 0.9% | 1,327 | 2.35 | City |
Shelbyville is the largest city in Shelby County, with a population of 18,109.
Simpsonville is the smallest city in Shelby County.
There are 2 cities in Shelby County, Kentucky.