There are 9 zip codes in Starr County, Texas. The most populated is 78582, located in Rio Grande City. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
7858244,988Rio Grande City
7858417,721Roma
785481,384Grulla
78545444Falcon Heights
78536404Delmita
78547358Garciasville
78591270Santa Elena
78588124San Isidro
785850Salineno

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