| Official Zip Code Name | Castalian Springs |
| Zip Code State | Tennessee |
| Primary County: | Sumner |
| Area Code | 615 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 6 |
| Elevation Range | 625 ft. |
| Area | 38.253 Sqm. |
| Coordinates(Y,X) | 36.373984, -86.291926 |