Summit SD ZIP Code
Summit city is located in South Dakota State, Roberts County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Summit SD zip code by its streets and block numbers if we have some of the Summit streets loaded in our website
Summit Area Code is 605 and Time Zone is Central (GMT -06:00).
Summit Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Summit City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Summit ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Summit, South Dakota.
The Summit Zip Code is 57266.
If you want to send a mail to Summit City, you should use the 57266 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Summit 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 57266 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Summit 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.