Mater Dei Catholic Church in Chula Vista's Otay Ranch community was established on July 14, 2006, through the canonical merger of Assumption and Holy Name parishes within the Roman Catholic Diocese of San Diego. The parish shares both its name and its Magdalena Avenue address with the adjacent Mater Dei Catholic High School, a TK–12 campus tracing its own founding to 1960 under Bishop Charles F. Buddy. Roman-Latin Rite liturgies in English and Spanish anchor the sacramental schedule, with parish programs spanning baptismal preparation, RCIA catechesis, marriage formation, and quinceañera coordination. The 91913 ZIP code location off Magdalena Avenue places the parish in eastern Chula Vista's fastest-growing residential zone, between the Olympic Parkway and Otay Ranch Town Center retail corridors. Wedding ceremonies, quinceañera Masses, and funeral liturgies generate year-round sacramental event programming that pairs with eastern Chula Vista's floral and décor specialists, from Eastlake Floral Design to artisan arrangements sourced throughout the South Bay. The parish campus at 1571 Magdalena Avenue sits adjacent to the high school's 48-acre athletic and academic complex, forming one of the largest contiguous Catholic institutional footprints in San Diego County.