There are 8 zip codes in Buena Vista County, Iowa. The most populated is 50588, located in Storm Lake. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
5058813,263Storm Lake
510022,819Alta
505681,583Newell
505851,207Sioux Rapids
50510994Albert City
50565381Marathon
50576251Rembrandt
50592141Truesdale

Zip Codes in Buena Vista County, Iowa by Population (2024)