There are 12 zip codes in Kossuth County, Iowa. The most populated is 50511, located in Algona. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
505117,041Algona
50522922Burt
50517909Bancroft
50480905Titonka
50598888Whittemore
50590870Swea City
50483765Wesley
50560709Lu Verne
50539453Fenton
50451414Lakota
50559283Lone Rock
50556110Ledyard

Zip Codes in Kossuth County, Iowa by Population (2024)