Frederick SD ZIP Code
Frederick city is located in South Dakota State, Brown County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Frederick SD zip code by its streets and block numbers if we have some of the Frederick streets loaded in our website
Frederick Area Code is 605 and Time Zone is Central (GMT -06:00).
Frederick Zip Code - South Dakota
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Frederick City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Frederick ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Frederick, South Dakota.
The Frederick Zip Code is 57441.
If you want to send a mail to Frederick City, you should use the 57441 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Frederick 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 57441 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Frederick 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.