10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mount Washington | 1 | 18,978 | 18,125 | 0.91% | 1,983 | 9.57 | City |
| Shepherdsville | 2 | 14,988 | 14,245 | 1% | 921 | 16.27 | City |
| Hillview | 3 | 9,023 | 8,650 | 0.84% | 1,344 | 6.71 | City |
| Pioneer Village | 4 | 2,782 | 2,672 | 0.8% | 2,269 | 1.23 | City |
| Brooks | 5 | 1,986 | 2,223 | -1.39% | 562 | 3.53 | CDP |
| Lebanon Junction | 6 | 1,824 | 1,751 | 0.83% | 323 | 5.64 | City |
| Heritage Creek | 7 | 1,199 | 1,209 | -0.17% | 2,216 | 0.54 | City |
| Hebron Estates | 8 | 1,058 | 1,013 | 0.86% | 1,790 | 0.59 | City |
| Fox Chase | 9 | 457 | 439 | 0.88% | 1,196 | 0.38 | City |
| Hunters Hollow | 10 | 336 | 323 | 0.9% | 4,667 | 0.07 | City |
Mount Washington is the largest city in Bullitt County, with a population of 18,978.
Hunters Hollow is the smallest city in Bullitt County.
There are 10 cities in Bullitt County, Kentucky.