Port Mansfield TX ZIP Code
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Port Mansfield city is located in Texas State, Willacy County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Port Mansfield TX zip code by its streets and block numbers if we have some of the Port Mansfield streets loaded in our website
Port Mansfield Area Code is 956 and Time Zone is Central (GMT -06:00).
Port Mansfield Zip Code - Texas
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Port Mansfield City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Port Mansfield ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Port Mansfield, Texas.
The Port Mansfield Zip Code is 78598.
If you want to send a mail to Port Mansfield City, you should use the 78598 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Port Mansfield 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 78598 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Port Mansfield 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.