Area Code 631
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Area Code 631

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

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

Area codes 631 and 934 are the telephone area codes for Suffolk County, New York, the central and eastern part of Long Island. Area code 631 was created in 1999 as a split from area code 516, and 934 was added as an overlay in 2016. Population centers within the plan area include Babylon, Brookhaven, Huntington, Patchogue, Riverhead, Smithtown, Shelter Island, and The Hamptons.

History of Suffolk County area codes

1947-1951: 914

With the introduction of the North American Numbering Plan in October 1947, Suffolk County, Nassau County, and the lower Hudson Valley were assigned area code 914.[1]

1951-1999: 516

In 1951, area code 516 was assigned to Suffolk and Nassau.[1]

1999-2016: 631

On November 1, 1999, area code 631 was created solely for Suffolk County, to satisfy the increased need for telephone numbers mainly due to cellular services, while Nassau County kept area code 516. Permissive dialing for numbers in 516 across Long Island continued until the spring of 2000.[2]

2016-present: 934 overlay

On July 16, 2016, area code 934 was created to overlay 631, which was nearing exhaustion. This is the first overlay area code for an area in the state of New York outside New York City and requires 10-digit dialing for both area codes, effective June 18, 2016.[3]

See also


  1. ^ a b "NANP Area Code History: 1948 - 1959". Archived from the original on September 11, 2002. Retrieved 2018.
  2. ^ Rather, John (October 31, 1999). "Suffolk County Gears Up for 631 Area Code". The New York Times. Retrieved 2018.
  3. ^ Kitchen, Patricia. "Area code countdown: Suffolk 10-digit dialing begins in June". Newsday. May 14, 2016.

External links

New York area codes: 212/332/646, 315/680, 347/718/929, 516, 518/838, 585, 607, 631/934, 716, 845, 914, 917
North: 203, 401, 860, 959
West: 516 area code 631/934 East: Atlantic Ocean
South: Atlantic Ocean
Connecticut area codes: 203/475, 860/959
Rhode Island area codes: 401

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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