| Zip Code : | 37031 |
| City : | Castalian Springs, Hartsville/Trousdale County |
| County : | Sumner County, Trousdale County |
| State : | Tennessee (TN) |
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| Land Area : | 40.12 sq mi |
| Water Area : | 2.44 sq mi |
| Latitude : | 36.3661539 |
| Longitude : | -86.2927183 |
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| Population (2010): | 3,712 |
| Population Estimate (2012) : | 3,948 |
| Population Density : | 92.53/sq mi |
| Housing Units (2012) : | 1,531 |
| Median Household Income (2012) : | $61,488 (Tennessee : $44,140, USA : $53,046) |
| Median Family Income (2012) : | $69,420 (Tennessee : $54,737, USA : $64,585) |
| Median House Price (2012) : | $157,700 (Tennessee : $138,700, USA : $181,400) |