Mill Spring NC ZIP Code
Mill Spring city is located in North Carolina State, Polk County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Mill Spring NC zip code by its streets and block numbers if we have some of the Mill Spring streets loaded in our website
Mill Spring Area Code is 828 and Time Zone is Eastern (GMT -05:00).
Mill Spring Zip Code - North Carolina
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Mill Spring City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Mill Spring ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Mill Spring, North Carolina.
The Mill Spring Zip Code is 28756.
If you want to send a mail to Mill Spring City, you should use the 28756 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Mill Spring 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 28756 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Mill Spring 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 North Carolina.