There are 4 zip codes in Castro County, Texas. The most populated is 79027, located in Dimmitt. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
790274,720Dimmitt
790431,634Hart
79063629Nazareth
79085Summerfield
showing: 4 rows

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