There are 4 zip codes in Grundy County, Missouri. The most populated is 64683, located in Trenton. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
646837,827Trenton
64679821Spickard
64641584Galt
64652381Laredo
showing: 4 rows

Zip Codes in Grundy County, Missouri by Population (2024)