Question: What is the name of this census-designated place with a population of over 25,000, that is the home of the WFTU college radio station?
Sentence (from "WFTU (AM)"): WFTU (1570 AM) is a college radio station licensed to Riverhead, New York and is owned and operated by Five Towns College in Dix Hills, New York on Long Island.
Relevant evidence: Yes