San José State University (commonly referred to as San Jose State or SJSU) is a comprehensive public university located in San Jose, California, United States. It is the founding school of the 23-campus California State University (CSU) system, and holds the distinction of being the oldest public institution of higher education on the West Coast of the United States. Located in downtown San Jose, the SJSU main campus is situated on 154 acres, or roughly 19 square blocks.