Rio Hondo TX ZIP Code
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Rio Hondo 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 Rio Hondo TX zip code by its streets and block numbers if we have some of the Rio Hondo streets loaded in our website
Rio Hondo Area Code is 956 and Time Zone is Central (GMT -06:00).
Rio Hondo Zip Code - Texas
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Rio Hondo City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Rio Hondo ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Rio Hondo, Texas.
The Rio Hondo Zip Code is 78583.
If you want to send a mail to Rio Hondo City, you should use the 78583 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Rio Hondo 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 78583 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Rio Hondo 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.