Home > TN > Sumner County > Castalian Springs > Zip 37031

Zip Code 37031 — Castalian Springs, TN

37031 is a ZIP Code associated with Castalian Springs, TN, located within Sumner. The postal region supports an estimated population of 3,926 residents across Data Pending housing units, with a population density of 39.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (36.372100, -86.303280)

Data MetricLocal Statistic
Postal / Zip Code37031
Primary CityCastalian Springs
State / ProvinceTN
CountySumner
Total Population3,926
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density39.6 people/sq mi
TimezoneAmerica/Chicago

How 37031 Compares

MetricZIP 37031Sumner CountyTN State Average
Population3,926191,1897,058,868
Median IncomeData PendingN/AN/A
Population Density39.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 37087Lebanon7.0 mi56,655N/A
Zip 37066Gallatin8.7 mi64,650N/A
Zip 37022Bethpage8.8 mi5,728N/A
Zip 37074Hartsville9.2 mi10,932N/A
Zip 37151Riddleton14.9 mi457N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →