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Zip Code 57783 — Spearfish, SD

57783 is a ZIP Code associated with Spearfish, SD, located within Lawrence. The postal region supports an estimated population of 17,248 residents across Data Pending housing units, with a population density of 31.2 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (44.471060, -103.921900)

Data MetricLocal Statistic
Postal / Zip Code57783
Primary CitySpearfish
State / ProvinceSD
CountyLawrence
Total Population17,248
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density31.2 people/sq mi
TimezoneAmerica/Denver

How 57783 Compares

MetricZIP 57783Lawrence CountySD State Average
Population17,24826,197906,188
Median IncomeData PendingN/AN/A
Population Density31.2 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57799Spearfish3.1 mi568N/A
Zip 57779Saint Onge10.3 mi347N/A
Zip 57754Lead14.6 mi3,749N/A
Zip 57793Whitewood17.1 mi2,173N/A
Zip 57732Deadwood21.2 mi1,714N/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 →