San Diego TX ZIP Code
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San Diego city is located in Texas State, Duval County and has a unique zip code assigned by the US Postal Service Office.
You can search for the San Diego TX zip code by its streets and block numbers if we have some of the San Diego streets loaded in our website
San Diego Area Code is 361 and Time Zone is Central (GMT -06:00).
San Diego Zip Code - Texas
The US ZIP Code basic format consists of five decimal numerical digits assigned to the San Diego City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the San Diego ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in San Diego, Texas.
The San Diego Zip Code is 78384.
If you want to send a mail to San Diego City, you should use the 78384 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded San Diego 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 78384 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a San Diego 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.