Plainfield IA ZIP Code
Plainfield city is located in Iowa State, Bremer County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Plainfield IA zip code by its streets and block numbers if we have some of the Plainfield streets loaded in our website
Plainfield Area Code is 319 and Time Zone is Central (GMT -06:00).
Plainfield Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Plainfield City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Plainfield ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Plainfield, Iowa.
The Plainfield Zip Code is 50666.
If you want to send a mail to Plainfield City, you should use the 50666 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Plainfield 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 50666 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Plainfield 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.