There are 7 zip codes in Louisa County, Iowa. The most populated is 52738, located in Columbus Junction. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
527383,389Columbus Junction
526533,109Wapello
527541,501Letts
526401,366Morning Sun
52752364Grandview
52646293Oakville
52737274Columbus City
showing: 7 rows

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