| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mount Washington | 1 | 19,175 | 18,113 | 0.98% | 2,003 | 10 | City |
| Shepherdsville | 2 | 15,078 | 14,219 | 0.98% | 927 | 16 | City |
| Hillview | 3 | 9,097 | 8,648 | 0.85% | 1,355 | 7 | City |
| Pioneer Village | 4 | 2,819 | 2,674 | 0.89% | 2,299 | 1 | City |
| Lebanon Junction | 5 | 1,854 | 1,755 | 0.93% | 329 | 6 | City |
| Heritage Creek | 6 | 1,251 | 1,210 | 0.56% | 2,312 | 1 | City |
| Hebron Estates | 7 | 1,065 | 1,012 | 0.85% | 1,802 | 1 | City |
| Fox Chase | 8 | 462 | 438 | 0.87% | 1,209 | 0 | City |
| Hunters Hollow | 9 | 340 | 323 | 0.59% | 4,722 | 0 | City |
Mount Washington is the largest city in Bullitt County, with a population of 19,175.
Hunters Hollow is the smallest city in Bullitt County, with a population of 340.
There are 9 cities in Bullitt County, Kentucky.