|Headquarters:||Garden City, NY|
Adelphi University is a private, nonsectarian university located in Garden City, in Nassau County, New York, United States. It is the oldest institution of higher education on Long Island. For the sixth year, Adelphi University has been named a Best Buy in higher education by the Fiske Guide to Colleges. The university was also named a 2010 Best College in the Northeastern Region by The Princeton Review.