There are 12 zip codes in Madison County, Iowa. The most populated is 50273, located in Winterset. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
50273Winterset8,866
50072Earlham2,892
50261Van Meter2,866
50240Saint Charles2,335
50061Cumming2,310
50070Dexter1,250
50257Truro1,131
50149Lorimor843
50222Peru373
50218Patterson305
50155Macksburg132
50033Bevington12

Madison County, Iowa Zip Codes by Population (2024)