The Archdiocese of Agana was:
- canonically erected: March 1, 1911
- elevated to a Diocese on October 14, 1965
- elevated to a Metropolitan Archdiocese on May 20, 1984
Legal Title: Archdishop of Guam, a Corporation Sole
Area: U.S. Territory of Guam
Location: Latitude: 13', 27"; Longitude: 144', 45"
Catholic Population: 101,000. Total Population: 133,000
Patroness: Our Lady of Camarin
Former Apostolic Vicars
Most Rev. Francisco Javier X. Villa y Mateu, OFM Capuchin, D.D.
Most Rev. Agustine Bernaus y Serra,OFM Capuchin, D.D.
Most Rev. Joaquin Felipe Oliaz y Zabalza,OFM Capuchin, D.D.
Former Residential Bishop
Most Rev. Apollinaris W. Baumgartner, OFM Capuchin, D.D.
Former Metropolitan Archbishop
Most Rev. Felixberto C. Flores, D.D.