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Zip Code 57633 — Isabel, SD

57633 is a ZIP Code associated with Isabel, SD, located within Corson. 57633 ranks #2 out of 11 ZIP codes in Corson County by population (and #220 out of 375 in SD). The area supports an estimated population of 445 residents across Data Pending housing units, with a population density of 0.2 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (45.445840, -101.500460)

Data MetricLocal Statistic
Postal / Zip Code57633
Primary CityIsabel
State / ProvinceSD
CountyCorson
Total Population445
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density0.2 people/sq mi
TimezoneAmerica/Denver

How 57633 Compares

MetricZIP 57633Corson CountySD State Average
Population4454,221 (Total)906,188 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density0.2 /sq mi----
County Pop Rank#2 of 11----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57656Timber Lake19.1 mi1,000N/A
Zip 57660Watauga26.6 mi111N/A
Zip 57634Keldron28.0 mi131N/A
Zip 57644Meadow28.2 mi388N/A
Zip 57661Whitehorse28.7 mi177N/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 →