Sea Island GA ZIP Code
Sea Island city is located in Georgia State, Glynn County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Sea Island GA zip code by its streets and block numbers if we have some of the Sea Island streets loaded in our website
Sea Island Area Code is 912 and Time Zone is Eastern (GMT -05:00).
Sea Island Zip Code - Georgia
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Sea Island City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Sea Island ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Sea Island, Georgia.
The Sea Island Zip Code is 31561.
If you want to send a mail to Sea Island City, you should use the 31561 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Sea 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 31561 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Sea 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 Georgia.