Underwood IA ZIP Code
Underwood city is located in Iowa State, Pottawattamie County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Underwood IA zip code by its streets and block numbers if we have some of the Underwood streets loaded in our website
Underwood Area Code is 712 and Time Zone is Central (GMT -06:00).
Underwood Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Underwood City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Underwood ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Underwood, Iowa.
The Underwood Zip Code is 51576.
If you want to send a mail to Underwood City, you should use the 51576 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Underwood 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 51576 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Underwood 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.