7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 37075 | Hendersonville | 72,541 |
| 37066 | Gallatin | 62,404 |
| 37148 | Portland | 25,421 |
| 37186 | Westmoreland | 10,644 |
| 37048 | Cottontown | 6,325 |
| 37022 | Bethpage | 6,036 |
| 37031 | Castalian Springs | 3,984 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Sumner County, Tennessee (US Census).