Sinai SD ZIP Code
Sinai city is located in South Dakota State, Brookings County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Sinai SD zip code by its streets and block numbers if we have some of the Sinai streets loaded in our website
Sinai Area Code is 605 and Time Zone is Central (GMT -06:00).
Sinai Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Sinai City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Sinai ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Sinai, South Dakota.
The Sinai Zip Code is 57061.
If you want to send a mail to Sinai City, you should use the 57061 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Sinai 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 57061 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Sinai 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.