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Zip Code 57538 — Herrick, SD

57538 is a ZIP Code associated with Herrick, SD, located within Gregory. The postal region supports an estimated population of 236 residents across Data Pending housing units, with a population density of 0.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.121670, -99.155510)

Data MetricLocal Statistic
Postal / Zip Code57538
Primary CityHerrick
State / ProvinceSD
CountyGregory
Total Population236
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density0.7 people/sq mi
TimezoneAmerica/Chicago

How 57538 Compares

MetricZIP 57538Gregory CountySD State Average
Population2363,849906,188
Median IncomeData PendingN/AN/A
Population Density0.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57571Saint Charles6.4 mi22N/A
Zip 57317Bonesteel8.9 mi573N/A
Zip 57523Burke9.4 mi1,041N/A
Zip 57335Fairfax19.8 mi303N/A
Zip 57533Gregory20.3 mi1,674N/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 →