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Zip Code 57239 — Grenville, SD

57239 is a ZIP Code associated with Grenville, SD, located within Day. 57239 ranks #4 out of 7 ZIP codes in Day County by population (and #244 out of 375 in SD). The area supports an estimated population of 358 residents across Data Pending housing units, with a population density of 3.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (45.512230, -97.309380)

Data MetricLocal Statistic
Postal / Zip Code57239
Primary CityGrenville
State / ProvinceSD
CountyDay
Total Population358
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density3.1 people/sq mi
TimezoneAmerica/Chicago

How 57239 Compares

MetricZIP 57239Day CountySD State Average
Population3585,426 (Total)906,188 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density3.1 /sq mi----
County Pop Rank#4 of 7----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57232Eden8.1 mi651N/A
Zip 57261Roslyn9.2 mi277N/A
Zip 57273Waubay12.5 mi1,165N/A
Zip 57257Peever13.6 mi637N/A
Zip 57247Lake City15.9 mi211N/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 →