Rio Grande City TX ZIP Code
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Rio Grande City city is located in Texas State, Starr County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Rio Grande City TX zip code by its streets and block numbers if we have some of the Rio Grande City streets loaded in our website
Rio Grande City Area Code is 956 and Time Zone is Central (GMT -06:00).
Rio Grande City Zip Code - Texas
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Rio Grande City City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Rio Grande City ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Rio Grande City, Texas.
The Rio Grande City Zip Code is 78582.
If you want to send a mail to Rio Grande City City, you should use the 78582 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Rio Grande City 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 78582 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Rio Grande City 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.