Portsmouth IA ZIP Code
Portsmouth city is located in Iowa State, Shelby County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Portsmouth IA zip code by its streets and block numbers if we have some of the Portsmouth streets loaded in our website
Portsmouth Area Code is 712 and Time Zone is Central (GMT -06:00).
Portsmouth Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Portsmouth City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Portsmouth ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Portsmouth, Iowa.
The Portsmouth Zip Code is 51565.
If you want to send a mail to Portsmouth City, you should use the 51565 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Portsmouth 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 51565 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Portsmouth 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.