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Zip Code 57571 — Saint Charles, SD

57571 is a ZIP Code associated with Saint Charles, SD, located within Gregory. The postal region supports an estimated population of 22 residents across Data Pending housing units, with a population density of 0.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.041520, -99.090420)

Data MetricLocal Statistic
Postal / Zip Code57571
Primary CitySaint Charles
State / ProvinceSD
CountyGregory
Total Population22
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density0.8 people/sq mi
TimezoneAmerica/Chicago

How 57571 Compares

MetricZIP 57571Gregory CountySD State Average
Population223,849906,188
Median IncomeData PendingN/AN/A
Population Density0.8 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57538Herrick6.4 mi236N/A
Zip 57317Bonesteel8.4 mi573N/A
Zip 57523Burke15.9 mi1,041N/A
Zip 57335Fairfax16.1 mi303N/A
Zip 57342Geddes24.2 mi393N/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 →