Round Mountain TX ZIP Code
Round Mountain city is located in Texas State, Blanco County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Round Mountain TX zip code by its streets and block numbers if we have some of the Round Mountain streets loaded in our website
Round Mountain Area Code is 830 and Time Zone is Central (GMT -06:00).
Round Mountain Zip Code - Texas
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Round Mountain City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Round Mountain ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Round Mountain, Texas.
The Round Mountain Zip Code is 78663.
If you want to send a mail to Round Mountain City, you should use the 78663 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Round Mountain 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 78663 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Round Mountain 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.