High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Mt. San Antonio College is a community college located in the Los Angeles suburb of Walnut, California, immediately west of the California State Polytechnic University, Pomona campus. Mt. SAC was founded in 1946 as a part of the 110 member California Community Colleges system with some of its older buildings having served as part of a small military hospital complex up until WWII. It is the largest single-campus district with 40,525 credit students, with a total unduplicated enrollment of 38,728. The current president of the college is Dr. John S. Nixon, who joined the college in 2004.