Citrus College is a community college located in the Los Angeles suburb of Glendora, California. The Citrus Community College District which supports the school includes the communities of Glendora, Azusa, Charter Oak, Claremont, Monrovia, and Duarte. The school is the oldest public community college in Los Angeles County, California; it was founded in 1915 by educator Floyd S. Hayden. Until 1961 the school was operated by the Citrus Union High School District.