St. Pius X Catholic Church in Chula Vista's Castle Park neighborhood has served the 91911 ZIP code since the Diocese of San Diego dedicated the Cuyamaca Avenue sanctuary in 1956. The parish's sacramental ministry covers baptisms, confirmations, weddings, and funeral liturgies, with altar and sanctuary floral arrangements supplied through South Bay vendors including Bonita Florist on Bonita Road. St. Pius X School opened in 1960 under the Sisters of St. Clare and continues to operate a K–8 Catholic curriculum integrating faith formation with core academics on the Cuyamaca Avenue campus. The Knights of Columbus council active at the parish organizes community-service drives and fundraising events that support both the school and families who enroll children in supplemental academic programs at San Diego Learning Center. The original Spanish Renaissance–style sanctuary features a 75-foot bell tower, with a copper-clad dome that replaced the original tile structure in 1976 after 20 years of exposure to the coastal South Bay climate.