There are 4 zip codes in Calhoun County, Texas. The most populated is 77979, located in Port Lavaca. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
7797916,607Port Lavaca
779832,337Seadrift
77982791Port O'Connor
77978458Point Comfort

Zip Codes in Calhoun County, Texas by Population (2024)