Area Code Atlas

NPA 914 designated as one of the first area codes

Area code 914 was designated in 1947 as one of the first 86 area codes for the North American Numbering Plan. It originally covered a large portion of southeastern New York, including Westchester, Long Island, and the lower Hudson Valley, but not New York City.

NPA 914 assigned to Long Island and lower Hudson Valley

Area code 914 was assigned to Suffolk County, Nassau County, the lower Hudson Valley, and adjacent areas as part of the original nationwide telephone numbering plan announced in October 1947.

Area code 516 created for Nassau and Suffolk counties

In 1951, area code 516 was created as a new numbering plan area for Nassau and Suffolk counties, splitting from area code 914. This change established a distinct code for Long Island, New York.

NPA 516 split from 914 for Nassau and Suffolk

Area code 516 was assigned in 1951 to Nassau and Suffolk Counties in New York, splitting from 914 to accommodate growing demand for telephone numbers. This split established 516 as the area code for Nassau and Suffolk counties on Long Island.

Extraordinary Jeopardy Procedures for 914 Numbering Plan Area (NPA) in New York

914 NPA Split, Creating 845 NPA (New York)

NPA 845 split from 914 for the Hudson Valley

On June 5, 2000, area code 845 was created by splitting from most of the territory of area code 914. The split assigned 845 to the Hudson Valley, while 914 was reduced to cover only Westchester County.

Revised Mandatory Dialing Date for the 914/845 Split (New York)

NPA 914 transitions to mandatory ten-digit dialing

Area code 914 transitioned to mandatory ten-digit dialing by October 24, 2021, due to the nationwide designation of 988 as the code for the National Suicide Prevention Lifeline. This change resolved a conflict with existing 988 central office assignments in the area.