The Diocese of St. Augustine is a Roman Catholic diocese located in northeastern Florida. Established in 1565, it is the oldest diocese in the United States and serves a diverse population across several counties, including Duval, St. Johns, and Clay. The diocese is part of the Province of Miami and is dedicated to spiritual growth, education, and community service. The diocese is led by a bishop, currently Bishop Felipe J. Estévez, who oversees various parishes, schools, and ministries. It focuses on promoting the teachings of the Catholic Church and providing support to its members through various programs and outreach initiatives.