Castana IA ZIP Code
Castana city is located in Iowa State, Monona County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Castana IA zip code by its streets and block numbers if we have some of the Castana streets loaded in our website
Castana Area Code is 712 and Time Zone is Central (GMT -06:00).
Castana Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Castana City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Castana ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Castana, Iowa.
The Castana Zip Code is 51010.
If you want to send a mail to Castana City, you should use the 51010 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Castana 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 51010 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Castana 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.