1 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Franklin | 1 | 10,682 | 10,207 | 0.75% | 707 | 15 | City |
Franklin is the largest city in Simpson County, with a population of 10,682.
Franklin is the smallest city in Simpson County, with a population of 10,682.
There is 1 city in Simpson County, Kentucky.