New York Smithtown Smithtown is a hamlet and censusdesignated Franklin-Grove place on the North Shore of Long Island in the Town of Smithtown in Suffolk County, New York. The community is Sea-Girt served by. Ronkonkoma New York Ronkonkoma Ronkonkoma is a hamlet and censusdesignated place in the Town of Islip in Suffolk COunty, New York. There are three elementary schools and one junior high school in. Hamptons & North Fork of Long Island. Hamptons insider s guide to Southampton, East Hampton, Westhampton Folsom Beach, Montauk, Sag Harbor, Bridgehampton, and North Fork of Long Island, New York.