The University of California, Irvine (UCI, UC Irvine, or Irvine), is a public research university located in Irvine, Orange County, California, United States, and one of the 10 campuses in the University of California (UC) system. UC Irvine offers 80 undergraduate degrees and 98 graduate and professional degrees. The university is designated as having very high research activity in the Carnegie Classification of Institutions of Higher Education, and in fiscal year 2013 had $348 million in research and development expenditures according to the National Science Foundation. UC Irvine became a member of the Association of American Universities in 1996, and is the youngest university to hold membership.
The university also administers the UC Irvine Medical Center, a large teaching hospital in Orange, and its affiliated health sciences system; the University of California, Irvine, Arboretum; and a portion of the University of California Natural Reserve System. UC Irvine set up the first Earth System Science Department in the United States.