High Quality Content by WIKIPEDIA articles! The Roman Catholic Diocese of San Jose in California (Latin: Dioecesis Sancti Josephi in California) is an ecclesiastical territory or diocese of the Roman Catholic Church in the northern California region of the United States. It comprises Santa Clara County, and is led by a bishop. Its patron saints are Saint Joseph and Saint Clare of Assisi. The Cathedral Basilica of St. Joseph in Downtown San Jose is the cathedral church of the diocese. The diocesan offices are located in the neighboring City of Santa Clara. The diocese serves over 600,000 Catholics in 52 parishes and missions, three university campus ministries, and 38 schools.