Area code 516

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The 516 area code

North American area code 516 is a telephone area code in the state of New York. 516 serves the Nassau County portion of Long Island.


When the North American Numbering Plan was devised by AT&T in October 1947, Nassau and Suffolk counties, and the lower Hudson Valley, were assigned area code 914. In 1951, Nassau and Suffolk were split off as a separate numbering plan area (NPA) with area code 516.[1]

Despite Long Island's dramatic growth in both population and telephone service in the second half of the 20th century, this configuration remained in place for five decades. By the late 1990s, the proliferation of cell phones and pagers required further division to provide more telephone numbers for Long Island. On November 1, 1999, Suffolk was split off as a new numbering plan area with area code 631, while Nassau retained 516. Permissive dialing of 516 across Long Island continued until spring 2000.[2]

Exhaust projection[edit]

A 2018 NANPA analysis of numbering resources projects exhaustion of NPA 516 in the fourth quarter of 2023.[3]

See also[edit]


  1. ^ 1947 Original Area Code Assignments, Linc Madison, a.k.a. LincMad Consulting
  2. ^ Rather, John (October 31, 1999). "Suffolk County Gears Up for 631 Area Code". The New York Times.
  3. ^ 2018 April NANPA Exhaust Projections

External links[edit]

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

Coordinates: 40°44′N 73°38′W / 40.74°N 73.63°W / 40.74; -73.63