3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lebanon | 1 | 57,804 | 38,894 | 5.77% | 1,422 | 41 | City |
| Mount Juliet | 2 | 46,254 | 39,690 | 2.42% | 1,721 | 27 | City |
| Watertown | 3 | 1,685 | 1,555 | 1.32% | 1,173 | 1 | City |
Lebanon is the largest city in Wilson County, with a population of 57,804.
Watertown is the smallest city in Wilson County, with a population of 1,685.
There are 3 cities in Wilson County, Tennessee.