Griswold IA ZIP Code
Griswold city is located in Iowa State, Cass County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Griswold IA zip code by its streets and block numbers if we have some of the Griswold streets loaded in our website
Griswold Area Code is 712 and Time Zone is Central (GMT -06:00).
Griswold Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Griswold City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Griswold ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Griswold, Iowa.
The Griswold Zip Code is 51535.
If you want to send a mail to Griswold City, you should use the 51535 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Griswold 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 51535 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Griswold 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.