Castalia IA ZIP Code
Castalia city is located in Iowa State, Winneshiek County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Castalia IA zip code by its streets and block numbers if we have some of the Castalia streets loaded in our website
Castalia Area Code is 563 and Time Zone is Central (GMT -06:00).
Castalia Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Castalia City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Castalia ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Castalia, Iowa.
The Castalia Zip Code is 52133.
If you want to send a mail to Castalia City, you should use the 52133 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Castalia 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 52133 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Castalia 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 Iowa.