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Zip Code 57782 — Smithwick, SD

57782 is a ZIP Code associated with Smithwick, SD, located within Fall River. The postal region supports an estimated population of 58 residents across Data Pending housing units, with a population density of 0.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.251820, -103.184400)

Data MetricLocal Statistic
Postal / Zip Code57782
Primary CitySmithwick
State / ProvinceSD
CountyFall River
Total Population58
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density0.4 people/sq mi
TimezoneAmerica/Denver

How 57782 Compares

MetricZIP 57782Fall River CountySD State Average
Population588,156906,188
Median IncomeData PendingN/AN/A
Population Density0.4 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57766Oral7.3 mi176N/A
Zip 57763Oelrichs9.7 mi356N/A
Zip 57722Buffalo Gap17.5 mi177N/A
Zip 57747Hot Springs19.2 mi5,839N/A
Zip 57764Oglala21.6 mi1,416N/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 →