Updated: 07-07-2025
Harlingen (TX) zip Code is 78551, Postal Code details. Harlingen is located in state TX, United States.
ZIP code 78551 is located in Harlingen TX in the United States.
Postal Code United States Zip Code 78551 Latest update Harlingen, TX |
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| Zip Code / Postal Code | 78551 | |||
City |
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State Code |
TX |
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County |
Cameron, United States |
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Postal Locations |
Harlingen, TX - Zip Code is - 78551 |
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Postal |
United States Postal Service USPS Link |
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Delivery Type |
Package Delivery and first class mail. |
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The zip code 78551 is an essential part of the postal system in Harlingen, TX. Located in a vibrant part of the city, this zip code covers a variety of neighborhoods, offering residents and businesses a unique blend of suburban comfort and urban convenience. Whether you're looking to send mail, relocate, or simply learn more about the area, Harlingen has a lot to offer.