Area Code: 631

631 Area Code belongs to the state of New York. The following cities fall under this area code: Bay Shore, Brentwood, Centereach, Central Islip, Commack, Copiague, Coram, Deer Park, Dix Hills, East Northport, East Patchogue, Hauppauge, Holbrook, Huntington Station, Islip, Lindenhurst, Medford, Ronkonkoma, Selden, Shirley, Smithtown, West Babylon, West Islip. There have been a total of 28494 Numbers for this area code.