Rockwell City IA ZIP Code
Rockwell City city is located in Iowa State, Calhoun County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Rockwell City IA zip code by its streets and block numbers if we have some of the Rockwell City streets loaded in our website
Rockwell City Area Code is 712 and Time Zone is Central (GMT -06:00).
Rockwell City Zip Code - Iowa
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Rockwell City City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Rockwell City ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Rockwell City, Iowa.
The Rockwell City Zip Code is 50579.
If you want to send a mail to Rockwell City City, you should use the 50579 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Rockwell City 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 50579 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Rockwell City 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.