Mound City SD ZIP Code
Mound City city is located in South Dakota State, Campbell County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Mound City SD zip code by its streets and block numbers if we have some of the Mound City streets loaded in our website
Mound City Area Code is 605 and Time Zone is Central (GMT -06:00).
Mound City Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Mound City City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Mound City ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Mound City, South Dakota.
The Mound City Zip Code is 57646.
If you want to send a mail to Mound City City, you should use the 57646 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Mound 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 57646 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Mound 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 South Dakota.