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Zip Code 57661 — Whitehorse, SD

57661 is a ZIP Code associated with Whitehorse, SD, located within Dewey. The postal region supports an estimated population of 177 residents across Data Pending housing units, with a population density of 2.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (45.270050, -100.964330)

Data MetricLocal Statistic
Postal / Zip Code57661
Primary CityWhitehorse
State / ProvinceSD
CountyDewey
Total Population177
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2.4 people/sq mi
TimezoneAmerica/Denver

How 57661 Compares

MetricZIP 57661Dewey CountySD State Average
Population1778,754906,188
Median IncomeData PendingN/AN/A
Population Density2.4 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57630Glencross7.4 mi11N/A
Zip 57656Timber Lake12.7 mi1,000N/A
Zip 57652Ridgeview16.2 mi265N/A
Zip 57657Trail City19.3 mi247N/A
Zip 57625Eagle Butte21.7 mi3,775N/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 →