Diocese of Rockville Centre

Diocese of Rockville Centre Dioecesis Petropolitana in Insula Longa
Location
Country	United States
Territory	Long Island, New York
Ecclesiastical province	New York
Statistics
Population - Total - Catholics	(as of 2014) 2,851,977 1,531,445 (53.7%)
Information
Denomination	Roman Catholic
Rite	Roman Rite
Established	April 6, 1957
Cathedral	St. Agnes Cathedral
Patron saint	Saint Agnes
Current leadership
Pope	Francis
Bishop	John Barres
Metropolitan Archbishop	Timothy Cardinal Dolan
Auxiliary Bishops	Andrzej Jerzy Zglejszewski Robert J. Brennan Nelson J. Perez
Emeritus Bishops	John Charles Dunne William Murphy
Map
Website
drvc.org

The Roman Catholic Diocese of Rockville Centre (Latin: Dioecesis Petropolitana in Insula Longa) comprises the territory of Nassau and Suffolk counties (regionally known as Long Island) in New York state, USA; although Fishers Island is part of Suffolk County, it is included in the Diocese of Norwich, Connecticut. Founded in 1957, this diocese was created from territory that once belonged to the Diocese of Brooklyn. It is the sixth-largest Catholic diocese in the United States, currently serving approximately 1.5 million people in 134 parishes. The diocese is named for the village where its cathedral, St. Agnes Cathedral, is located, Rockville Centre in Nassau County. The fifth and current bishop is John Barres.

Most Reverend Walter P. Kellenberg served as first bishop of the diocese from 1957-1976. Kellenberg was followed by Bishop John McGann, who retired in 2000 and died in 2002. The diocese was led briefly by Bishop James T. McHugh, who died of cancer on December 10, 2000.

The Most Reverend William Murphy served as the diocese's fourth bishop from 2001 to 2017. Murphy arrived in Long Island from his native Archdiocese of Boston, where he served as the archdiocese's vicar general. He was succeeded by John Barres on January 31, 2017.

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