3 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lebanon | 1 | 54,652 | 38,894 | 6.12% | 1,344 | 41 | City |
| Mount Juliet | 2 | 45,160 | 39,690 | 2.48% | 1,680 | 27 | City |
| Watertown | 3 | 1,663 | 1,555 | 1.28% | 1,158 | 1 | City |
Lebanon is the largest city in Wilson County, with a population of 54,652.
Watertown is the smallest city in Wilson County, with a population of 1,663.
There are 3 cities in Wilson County, Tennessee.