Decorah IA ZIP Code
Decorah 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 Decorah IA zip code by its streets and block numbers if we have some of the Decorah streets loaded in our website
Decorah Area Code is 563 and Time Zone is Central (GMT -06:00).
Decorah Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Decorah City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Decorah ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Decorah, Iowa.
The Decorah Zip Code is 52101.
If you want to send a mail to Decorah City, you should use the 52101 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Decorah 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 52101 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Decorah 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.