There are 6 zip codes in Willacy County, Texas. The most populated is 78580, located in Raymondville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
78580Raymondville13,344
78569Lyford4,133
78594Sebastian1,398
78561Lasara900
78590San Perlita711
78598Port Mansfield108

Willacy County, Texas Zip Codes by Population (2024)