Area codes 631 and 934

Area codes 631 and 934 are area codes for New York. Area code 631 was created on November 1, 1997, as a split from area code 516. It covers most of Suffolk County on Long Island, such as Brookhaven, Huntington, Islip, Babylon, Smithtown, and Riverhead. It was overlaid by 934 in 2016.

References

631
631