There are 4 zip codes in Posey County, Indiana. The most populated is 47620, located in Mount Vernon. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
47620Mount Vernon12,738
47638Wadesville3,529
47633Poseyville2,274
47631New Harmony2,097

Posey County, Indiana Zip Codes by Population (2024)