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Zip Code 57042 — Madison, SD

57042 is a ZIP Code associated with Madison, SD, located within Lake. The postal region supports an estimated population of 7,756 residents across Data Pending housing units, with a population density of 15.5 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (43.977440, -97.151330)

Data MetricLocal Statistic
Postal / Zip Code57042
Primary CityMadison
State / ProvinceSD
CountyLake
Total Population7,756
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density15.5 people/sq mi
TimezoneAmerica/Chicago

How 57042 Compares

MetricZIP 57042Lake CountySD State Average
Population7,75611,128906,188
Median IncomeData PendingN/AN/A
Population Density15.5 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57075Wentworth9.2 mi1,296N/A
Zip 57076Winfred10.0 mi325N/A
Zip 57016Chester11.3 mi676N/A
Zip 57054Ramona11.3 mi703N/A
Zip 57057Rutland13.0 mi196N/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 →