4 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Bardstown | 1 | 14,365 | 13,582 | 0.92% | 1,187 | 12 | City |
| Bloomfield | 2 | 1,011 | 959 | 0.9% | 702 | 1 | City |
| New Haven | 3 | 844 | 799 | 0.96% | 1,455 | 1 | City |
| Fairfield | 4 | 142 | 120 | 2.9% | 497 | 0 | City |
Bardstown is the largest city in Nelson County, with a population of 14,365.
Fairfield is the smallest city in Nelson County, with a population of 142.
There are 4 cities in Nelson County, Kentucky.