Area code 631

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The blue area is New York State; the red area is area code 631.

North American area code 631 is a telephone area code in the state of New York created on November 1, 1999, when it was split from area code 516. It is assigned solely to Suffolk County on middle and eastern Long Island. Population centers within the area code include Brookhaven, East Hampton Huntington, Patchogue, Smithtown, Shelter Island, and Southampton Town.

History of Suffolk County area codes[edit]

1947 – 1951: 914[edit]

Upon North American adoption of area codes in October 1947, Suffolk, Nassau, and the lower Hudson Valley were assigned the 914 area code.[1]

1951 – 1999: 516[edit]

In 1951, the 516 area code was assigned to Nassau and Suffolk.[2]

1999 – present: 631[edit]

On November 1, 1999, Nassau County retained the 516 area code, while Suffolk received the new 631 area code.[3]

Future[edit]

According to the 2013 NPA Exhaust Projection, area code 631 is expected to be exhausted in the first quarter of 2016.[4]

See also[edit]

New York area codes: 212, 315, 347, 516, 518, 585, 607, 631, 646, 716, 718, 845, 914, 917, 929
North: 203, 401, 860
West: 516area code 631East: Atlantic Ocean
South: Atlantic Ocean
Connecticut area codes: 203, 475, 860
Rhode Island area codes: 401

Coordinates: 40°50′N 73°00′W / 40.84°N 73.00°W / 40.84; -73.00

References[edit]