Area codes 631 and 934 are the telephone area codes for Suffolk County, New York, comprising mainly the central and eastern part of Long Island. Area code 631 was created in 1999 as a division from area code 516, and 934 was added as an overlay in 2016. Communities within the plan area include Babylon, Brookhaven, Huntington, Patchogue, Riverhead, Smithtown, Southold, Shelter Island, and the area of The Hamptons.
With the introduction of the North American Numbering Plan during October 1947, Suffolk County, Nassau County, the lower Hudson Valley, and some areas adjacent were assigned area code 914.
Source: Wikipedia.org
Copyright: Creative Commons 3.0
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