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Zip Code 57256 — Ortley, SD

57256 is a ZIP Code associated with Ortley, SD, located within Grant. The postal region supports an estimated population of 238 residents across Data Pending housing units, with a population density of 2.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (45.249180, -97.201560)

Data MetricLocal Statistic
Postal / Zip Code57256
Primary CityOrtley
State / ProvinceSD
CountyGrant
Total Population238
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density2.1 people/sq mi
TimezoneAmerica/Chicago

How 57256 Compares

MetricZIP 57256Grant CountySD State Average
Population2388,747906,188
Median IncomeData PendingN/AN/A
Population Density2.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57266Summit6.0 mi626N/A
Zip 57273Waubay6.8 mi1,165N/A
Zip 57263South Shore12.1 mi351N/A
Zip 57251Marvin13.0 mi228N/A
Zip 57235Florence13.6 mi774N/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 →