There are 7 zip codes in St. Mary Parish, Louisiana. The most populated is 70538, located in Franklin. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
7053813,342Franklin
703928,395Patterson
703424,786Berwick
705141,979Baldwin
70523360Charenton
70522168Centerville
70340132Amelia

Zip Codes in St. Mary Parish, Louisiana by Population (2024)