ZIP Code 37031

Zip Code: 37031
Type: Standard
Official USPS city name: Castalian Springs
Official USPS State Code: TN
Official State Name: Tennessee
ZCTA: TRUE
Population: 4281.0
Density: 41.2
Primary Official County Code: 47165
Primary Official County Name: Sumner
Official County Name: Sumner| Trousdale
Official County Code: 47165| 47169
Imprecise: FALSE
Military: FALSE
Timezone: America/Chicago (01:35 AM Friday, September 25 2026-09-25 (GMT -0500))
Geo Point: 36.37137, -86.29964

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