Johns Island SC ZIP Code
Johns Island city is located in South Carolina State, Charleston County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Johns Island SC zip code by its streets and block numbers if we have some of the Johns Island streets loaded in our website
Johns Island Area Code is 843 and Time Zone is Eastern (GMT -05:00).
Johns Island Zip Code - South Carolina
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Johns Island City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Johns Island ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Johns Island, South Carolina.
The Johns Island Zip Code is 29455, 29457.
If you want to send a mail to Johns Island City, you should use the 29455, 29457 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Johns Island 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 29455, 29457 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Johns Island 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 Carolina.