Identifiers: city · community · CDP · town
| Rank | Community | Population |
|---|---|---|
| 1 | Gallatin (city), TN | 44,431 |
| 2 | Mount Juliet (city), TN | 39,289 |
| 3 | Lebanon (city), TN | 38,431 |
| 4 | Hartsville/Trousdale County (community), TN | 11,615 |
| 5 | Green Hill (CDP), TN | 6,518 |
| 6 | Rural Hill (CDP), TN | 2,047 |
| 7 | Watertown (city), TN | 1,553 |
| 8 | South Carthage (town), TN | 1,490 |
| 9 | Gladeville (CDP), TN | 1,189 |
| 10 | Alexandria (town), TN | 981 |
| 11 | Castalian Springs (CDP), TN | 608 |
| 12 | Tuckers Crossroads (CDP), TN | 263 |
| 13 | Hickman (CDP), TN | 224 |
| 14 | Norene (CDP), TN | 148 |