Harlingen TX ZIP Code
Harlingen city is located in Texas State, Cameron County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Harlingen TX zip code by its streets and block numbers if we have some of the Harlingen streets loaded in our website
Harlingen Area Code is 956 and Time Zone is Central (GMT -06:00).
Harlingen Zip Code - Texas
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Harlingen City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Harlingen ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Harlingen, Texas.
The Harlingen Zip Code is 78550, 78551, 78552, 78553.
If you want to send a mail to Harlingen City, you should use the 78550, 78551, 78552, 78553 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Harlingen ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 78550, 78551, 78552, 78553 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Harlingen city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Texas.