There are 12 zip codes in LaPorte County, Indiana. The most populated is 46350, located in La Porte. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
46350La Porte44,923
46360Michigan City43,891
46391Westville9,369
46574Walkerton7,542
46371Rolling Prairie3,525
46390Wanatah3,172
46382Union Mills1,932
46346Kingsford Heights1,391
46340Hanna1,330
46348La Crosse1,066
46365Mill Creek838
46345Kingsbury77

LaPorte County, Indiana Zip Codes by Population (2024)