There are 4 zip codes in Polk County, Nebraska. The most populated is 68666, located in Stromsburg. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
686661,608Stromsburg
686511,224Osceola
686621,192Shelby
68654563Polk
showing: 4 rows

Zip Codes in Polk County, Nebraska by Population (2024)