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Zip Code 37166 — Smithville, TN

37166 is a ZIP Code associated with Smithville, TN, located within DeKalb. The postal region supports an estimated population of 15,731 residents across Data Pending housing units, with a population density of 39.3 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (35.924440, -85.789780)

Data MetricLocal Statistic
Postal / Zip Code37166
Primary CitySmithville
State / ProvinceTN
CountyDeKalb
Total Population15,731
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density39.3 people/sq mi
TimezoneAmerica/Chicago

How 37166 Compares

MetricZIP 37166DeKalb CountyTN State Average
Population15,73121,1367,058,868
Median IncomeData PendingN/AN/A
Population Density39.3 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 37059Dowelltown7.9 mi1,590N/A
Zip 37095Liberty10.3 mi1,697N/A
Zip 38587Walling10.4 mi1,446N/A
Zip 38582Silver Point11.9 mi1,729N/A
Zip 38569Lancaster13.3 mi390N/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 →