Castroville TX ZIP Code
Castroville city is located in Texas State, Medina County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Castroville TX zip code by its streets and block numbers if we have some of the Castroville streets loaded in our website
Castroville Area Code is 830 and Time Zone is Central (GMT -06:00).
Castroville Zip Code - Texas
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Castroville City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Castroville ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Castroville, Texas.
The Castroville Zip Code is 78009.
If you want to send a mail to Castroville City, you should use the 78009 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Castroville 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 78009 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Castroville 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.