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Zip Code 57620 — Bison, SD

57620 is a ZIP Code associated with Bison, SD, located within Perkins. The postal region supports an estimated population of 564 residents across Data Pending housing units, with a population density of 0.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (45.384250, -102.538970)

Data MetricLocal Statistic
Postal / Zip Code57620
Primary CityBison
State / ProvinceSD
CountyPerkins
Total Population564
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density0.6 people/sq mi
TimezoneAmerica/Denver

How 57620 Compares

MetricZIP 57620Perkins CountySD State Average
Population5644,097906,188
Median IncomeData PendingN/AN/A
Population Density0.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57649Prairie City17.3 mi273N/A
Zip 57644Meadow22.6 mi388N/A
Zip 57651Reva27.0 mi191N/A
Zip 57640Lodgepole27.5 mi41N/A
Zip 57758Mud Butte29.5 mi35N/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 →