There are 15 zip codes in Clayton County, Iowa. The most populated is 52052, located in Guttenberg. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
520522,890Guttenberg
521592,412Monona
520762,150Strawberry Point
520431,860Elkader
520421,663Edgewood
521571,457Mc Gregor
520491,132Garnavillo
52047801Farmersburg
52072792Saint Olaf
52156681Luana
52048307Garber
52158298Marquette
52044297Elkport
52077287Volga
5206692North Buena Vista
showing: 15 rows

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