Dix Hills, NY is currently using one area code which is area code 631. Area Code 631 was created from a split of area code 516 and put into service on November 1, 1999.
In addition to Dix Hills, NY area code 631 serves Suffolk County on Long Island the including the towns and communities of Babylon, Brookhaven, East Hampton, Huntington, Islip, Riverhead, Shelter Island, Smithtown, Southampton and Southold.
Dix Hills, NY is located in Suffolk County and observes the Eastern Time Zone. View our Times by Area Code tool.