Rio Grande City, Texas

1 ZIP code · Central time

ZIP codes (largest first)

78582 · 44,741
Population15,396
StateTexas
CountyStarr County
Time zoneCentral
Land area11.35 sq mi

Area codes in this area

956

These are the area codes that most often serve Rio Grande City (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Find the ZIP+4 for an address in Rio Grande City

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.