3 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Springfield | 1 | 2,998 | 2,857 | 0.94% | 729 | 4 | City |
| Willisburg | 2 | 299 | 299 | 0% | 436 | 1 | City |
| Mackville | 3 | 208 | 205 | 0% | 514 | 0 | City |
Springfield is the largest city in Washington County, with a population of 2,998.
Mackville is the smallest city in Washington County, with a population of 208.
There are 3 cities in Washington County, Kentucky.