James J. Byrne, who was transferred to the Archdiocese of Dubuque in 1962. The fifth bishop of Boise, Sylvester W. Treinen, a priest of the Diocese of Bismarck, chosen by Pope John XXIII. Treinen was consecrated on July 25, 1962. He promptly departed for Rome, where he attended three sessions of the Second Vatican Council. As bishop, he is remembered for implementing the decrees of that council. Treinen retired in 1988 and died in 1996, having served the diocese as a bishop (and bishop emeritus) for 34 years. Pope John Paul II had Tod Brown installed as the sixth bishop of Boise on April 3, 1989. He became the Bishop of Orange in 1998. On January 19, 1999, Michael P. Driscoll was appointed bishop by Pope John Paul II. Beginning in the middle of the twentieth century, large numbers of migrant workers from Mexico arrived in the diocese. Some settled permanently in the region, while many others remained migratory and would return to Mexico after the harvest. Toward the latter part of the century, the number of immigrants from Mexico and other parts of Latin America increased dramatically, with the vast majority of them settling permanently in the southern part of the diocese. So many immigrants have now made Idaho their home that people of Latin American heritage now constitute well over half of the Catholics within the diocese. The diocese today Approximately 150,000 Catholics live within the Diocese of Boise, making them approximately 11% of the population of the state of Idaho. The diocese is divided up into six regions, called deaneries. In the whole of the diocese, there are 51 parishes, 31 stations, and 25 chapels. There are also five Catholic hospitals—namely Saint Alphonsus Regional Medical Center in Boise, Mercy Medical Center in Nampa, St. Joseph Regional Medical Center in Lewiston, St. Mary Hospital in Cottonwood, and St. Benedict Medical Center in Jerome — 13 elementary schools, and one high school--Bishop Kelly in Boise. As of November 2014, the diocese has two vicars general, Very Reverend Dennis Wassmuth (Vicar General for Finance), and Very Reverend Joseph daSilva (Vicar General for the Clergy and Parishes). The chancellor is Mark Raper, who also serves as the Director of the Diocesan Canonical Office. On November 4, 2014, Pope Francis appointed Peter F. Christensen as the eighth bishop of Boise. He was installed on December 17, 2014 at St. John Cathedral in