East Islip NY ZIP Code
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East Islip city is located in New York State, Suffolk County and has a unique zip code assigned by the US Postal Service Office.
You can search for the East Islip NY zip code by its streets and block numbers if we have some of the East Islip streets loaded in our website
East Islip Area Code is 631 and Time Zone is Eastern (GMT -05:00).
East Islip Zip Code - New York
The US ZIP Code basic format consists of five decimal numerical digits assigned to the East Islip City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the East Islip ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in East Islip, New York.
The East Islip Zip Code is 11730.
If you want to send a mail to East Islip City, you should use the 11730 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded East Islip 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 11730 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a East Islip 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 New York.