List of the Catholic dioceses of the United States

Provinces and dioceses of the Roman Catholic Church in the United States. Each color represents one of the 32 Latin-rite provinces.

The following is the list of the Catholic dioceses and archdioceses of the United States. This list includes not only dioceses of the Latin or Western Church but also the eparchies (dioceses) of the Eastern Catholic Churches that are in full communion with the Bishop of Rome.

The Catholic Church in the United States comprises 195 particular churches, of which the 194 dioceses and one apostolic exarchate^[1] are each led by a bishop. In the United States, state, counties or county equivalents are usually used to determine boundaries of most territorial dioceses.^[2] There are also nationwide or large area dioceses defined by rite for many Eastern Catholics. In addition to the 195 territorial dioceses and exarchate, there is the Archdiocese for the Military Services, USA, which ministers to Catholics serving in the military or diplomatic corps and their dependents. Dioceses led by archbishops are called archdioceses. There are 32 archdioceses whose archbishops serve as the metropolitans of 32 Roman Catholic ecclesiastical provinces in the United States. The Roman Catholic Archdiocese for the Military Services, USA, is not a metropolitan see. The Personal Ordinariate of the Chair of Saint Peter was established on January 1, 2012, for former Anglicans to join the Catholic Church.^[3]

In addition to the 195 dioceses and the single exarchate whose bishops are members of the United States Conference of Catholic Bishops (USCCB), there are several other dioceses in the nation's unincorporated territories (i.e., in Puerto Rico, American Samoa, Guam, and the Northern Mariana Islands).

The United States Catholic population is mainly of the Latin Church, but eparchies and archeparchies of the Eastern Catholic Churches exist in the nation. These particular Churches are also organized into ecclesiastical provinces of their own or are exempt dioceses immediately subject to the Holy See.

Dioceses and archdioceses are normally named by the city in which the bishop or archbishop has his seat. The diocese may take in a much wider area: e.g., the Eparchy of Our Lady of Deliverance of Newark for Syrian Rite Catholics actually serves all Syrian Catholics in the entire United States and Canada; the Diocese of Albany serves not just the city of Albany, NY, but also a large portion of central New York State.

All Catholic bishops from the United States and the U. S. Virgin Islands—whether diocesan, coadjutor, or auxiliary; Latin Rite or Eastern Rite—are members of the United States Conference of Catholic Bishops. Bishops from Puerto Rico form the Episcopal Conference of Puerto Rico,^[4] while bishops in the overseas dependencies in the Pacific Ocean are members of the Episcopal Conference of the Pacific.

Ecclesiastical province of Anchorage

The Ecclesiastical Province of Anchorage comprises the state of Alaska.

Archdiocese of Anchorage
- Diocese of Fairbanks
- Diocese of Juneau

Ecclesiastical province of Atlanta

The Ecclesiastical Province of Atlanta comprises the states of Georgia, North Carolina, and South Carolina.

Archdiocese of Atlanta

Ecclesiastical province of Baltimore

The Ecclesiastical Province of Baltimore comprises all but five counties of the state of Maryland,^[5] and all of the states of Delaware, Virginia, and West Virginia.

Archdiocese of Baltimore
- Diocese of Arlington
- Diocese of Richmond
- Diocese of Wheeling-Charleston
- Diocese of Wilmington (comprising Delaware and portions of Maryland, it is one of only a few dioceses to include more than one state in the U.S.)^[6]

Ecclesiastical province of Boston

The Ecclesiastical Province of Boston comprises the states of Maine, Massachusetts, New Hampshire, and Vermont.

Archdiocese of Boston

Ecclesiastical province of Chicago

The Ecclesiastical Province of Chicago comprises the state of Illinois.

Archdiocese of Chicago

Ecclesiastical province of Cincinnati

The Ecclesiastical Province of Cincinnati comprises the state of Ohio.

Archdiocese of Cincinnati

Ecclesiastical province of Denver

The Ecclesiastical Province of Denver comprises the states of Colorado and Wyoming.

Archdiocese of Denver

Ecclesiastical province of Detroit

The Ecclesiastical Province of Detroit comprises the state of Michigan.

Archdiocese of Detroit

Ecclesiastical province of Dubuque

The Ecclesiastical Province of Dubuque comprises the state of Iowa.

Archdiocese of Dubuque

Ecclesiastical province of Galveston-Houston

The Ecclesiastical Province of Galveston-Houston comprises the eastern and southern counties of the state of Texas.

Archdiocese of Galveston-Houston

Ecclesiastical province of Hartford

The Ecclesiastical Province of Hartford comprises the states of Connecticut and Rhode Island, as well as a small portion of New York.^[7]

Archdiocese of Hartford

Ecclesiastical province of Indianapolis

The Ecclesiastical Province of Indianapolis comprises the state of Indiana.

Archdiocese of Indianapolis
- Diocese of Evansville
- Diocese of Fort Wayne-South Bend
- Diocese of Gary
- Diocese of Lafayette in Indiana

Ecclesiastical province of Kansas City

The Ecclesiastical Province of Kansas City comprises the state of Kansas.

Archdiocese of Kansas City in Kansas

Ecclesiastical province of Los Angeles

The Ecclesiastical Province of Los Angeles comprises the southern and central counties of the state of California.

Archdiocese of Los Angeles

Ecclesiastical province of Louisville

The Ecclesiastical Province of Louisville comprises the states of Kentucky and Tennessee.

Archdiocese of Louisville

Ecclesiastical province of Miami

The Ecclesiastical Province of Miami comprises the state of Florida.

Archdiocese of Miami
- Diocese of Orlando
- Diocese of Palm Beach
- Diocese of Pensacola-Tallahassee
- Diocese of St. Augustine
- Diocese of St. Petersburg
- Diocese of Venice

Ecclesiastical province of Milwaukee

The Ecclesiastical Province of Milwaukee comprises the state of Wisconsin.

Archdiocese of Milwaukee

Ecclesiastical province of Mobile

The Ecclesiastical Province of Mobile comprises the states of Alabama and Mississippi.

Archdiocese of Mobile

Ecclesiastical province of New Orleans

The Ecclesiastical Province of New Orleans comprises the state of Louisiana.

Archdiocese of New Orleans
- Diocese of Alexandria in Louisiana
- Diocese of Baton Rouge
- Diocese of Houma-Thibodaux
- Diocese of Lafayette in Louisiana
- Diocese of Lake Charles
- Diocese of Shreveport

Ecclesiastical province of New York

The Ecclesiastical Province of New York comprises the state of New York, except for a small portion that belongs to the Province of Hartford.^[7]

Archdiocese of New York

Ecclesiastical province of Newark

The Ecclesiastical Province of Newark comprises the state of New Jersey.

Archdiocese of Newark

Ecclesiastical province of Oklahoma City

The Ecclesiastical Province of Oklahoma City comprises the states of Arkansas and Oklahoma.

Archdiocese of Oklahoma City
- Diocese of Little Rock
- Diocese of Tulsa

Ecclesiastical province of Omaha

The Ecclesiastical Province of Omaha comprises the state of Nebraska.

Archdiocese of Omaha
- Diocese of Grand Island
- Diocese of Lincoln

Ecclesiastical province of Philadelphia

The Ecclesiastical Province of Philadelphia comprises the state of Pennsylvania.

Archdiocese of Philadelphia
- Diocese of Allentown
- Diocese of Altoona-Johnstown
- Diocese of Erie
- Diocese of Greensburg
- Diocese of Harrisburg
- Diocese of Pittsburgh
- Diocese of Scranton

Ecclesiastical province of Portland in Oregon

The Ecclesiastical Province of Portland comprises the states of Idaho, Montana and Oregon.

Archdiocese of Portland
- Diocese of Baker
- Diocese of Boise
- Diocese of Great Falls-Billings
- Diocese of Helena

Ecclesiastical province of Saint Louis

The Ecclesiastical Province of Saint Louis comprises the state of Missouri.

Archdiocese of Saint Louis
- Diocese of Jefferson City
- Diocese of Kansas City-Saint Joseph
- Diocese of Springfield-Cape Girardeau

Ecclesiastical province of Saint Paul and Minneapolis

The Ecclesiastical Province of Saint Paul and Minneapolis comprises the states of Minnesota, North Dakota and South Dakota.

Archdiocese of Saint Paul and Minneapolis

Ecclesiastical province of San Antonio

The Ecclesiastical Province of San Antonio comprises the western and northern counties of the state of Texas.

Archdiocese of San Antonio

Ecclesiastical province of San Francisco

The Ecclesiastical Province of San Francisco comprises the northern counties of the state of California and all of the states of Hawaii, Nevada and Utah.

Archdiocese of San Francisco

Ecclesiastical province of Santa Fe

The Ecclesiastical Province of Santa Fe comprises the states of Arizona and New Mexico.

Archdiocese of Santa Fe
- Diocese of Gallup (comprising portions of New Mexico and Arizona, it is one of only a few dioceses to include more than one state in the U.S.)^[6]
- Diocese of Las Cruces
- Diocese of Phoenix
- Diocese of Tucson

Ecclesiastical province of Seattle

The Ecclesiastical Province of Seattle comprises the state of Washington.

Archdiocese of Seattle
- Diocese of Spokane
- Diocese of Yakima

Ecclesiastical province of Washington

The Ecclesiastical Province of Washington comprises the District of Columbia, five neighboring counties in Maryland and the U.S. Virgin Islands.^[5]

Archdiocese of Washington
- Diocese of Saint Thomas

Ecclesiastical province of Agaña

The Ecclesiastical Province of Agaña comprises the United States overseas dependencies of Guam and the Northern Mariana Islands and the unorganized, unincorporated territory of Wake Island. Also included are the sovereign and independent nations of the Marshall Islands, Micronesia, and Palau.

Archdiocese of Agaña
- Diocese of Caroline Islands
- Diocese of Chalan Kanoa
- Apostolic Prefecture of the Marshall Islands

Ecclesiastical province of Samoa-Apia

The Ecclesisatical Province of Samoa-Apia is primarily composed of territory outside of the United States, however, it includes as a suffragan a single diocese that comprises an overseas dependency of the United States, American Samoa.

Archdiocese of Samoa-Apia
- Diocese of Samoa-Pago Pago

Ecclesiastical province of San Juan de Puerto Rico

The Ecclesiastical Province of San Juan de Puerto Rico comprises the United States Commonwealth of Puerto Rico.

Archdiocese of San Juan de Puerto Rico
- Diocese of Arecibo
- Diocese of Caguas
- Diocese of Fajardo-Humacao
- Diocese of Mayagüez
- Diocese of Ponce

Province of Philadelphia (Ukrainian)

The Ukrainian Greek Catholic Church in the United States is organized into a metropolia (or province) consisting of a metropolitan archeparchy and three suffragan eparchies.

Archeparchy of Philadelphia

Province of Pittsburgh (Ruthenian)

The Ruthenian Catholic Church in the United States is organized into the sui iuris Province of Pittsburgh, consisting of a metropolitan archeparchy and three suffragan eparchies. The eparchies also serve the faithful of other Byzantine Rite Churches without established hierarchies in the United States, namely those of the Albanian, Belarusian, Bulgarian, Croatian, Greek, Hungarian, Italo-Albanian, Macedonian, Russian, and Slovakian Byzantine Catholic Churches.

Archeparchy of Pittsburgh
- Eparchy of Parma
- Eparchy of Passaic
- Holy Protection of Mary Eparchy of Phoenix (formerly Eparchy of Van Nuys)

Eastern Catholic Eparchies Immediately Subject to the Holy See

The following particular churches of various Eastern Rites are not suffragan to metropolitan sees, but are instead immediately subject to the Holy See, although juridically they remain part of their respective patriarchal or major archiepiscopal Churches.

Armenian Catholic Church

Armenian Catholic Eparchy of Our Lady of Nareg in New York (territory comprises the United States & Canada)

Chaldean Catholic Church

Maronite Catholic Church

Melkite Greek Catholic Church

Melkite Greek Catholic Eparchy of Newton

Romanian Catholic Church

Romanian Catholic Eparchy of St George's in Canton (eparchy includes two parishes in Canada)

Syrian Catholic Church

Syrian Catholic Eparchy of Our Lady of Deliverance of Newark (territory comprises the United States & Canada)

Syro-Malabar Catholic Church

Syro-Malabar Catholic Diocese of Saint Thomas the Apostle of Chicago

Syro-Malankara Catholic Church

Syro-Malankara Catholic Exarchate in the United States

Military Archdiocese

Members of the Armed Forces of the United States and their dependents, employees of the U.S. Veterans Health Administration and its patients, and Americans in government service overseas, including the nation's diplomatic corps and their dependents — both Latin and Eastern — are served by the Archdiocese for the Military Services, USA, a non-metropolitan archdiocese (that is, without suffragan dioceses within a territorial province). It is led by an archbishop, who at present is assisted by three auxiliary bishops.

Archdiocese for the Military Services, USA

Personal Ordinariate

Under the provisions of Anglicanorum Coetibus, issued in 2009, an effort was underway to establish a personal ordinariate, or diocese, in the United States. The ordinariate was formed for former Anglicans, including members from the Episcopal Church and Continuing Anglican churches, and Anglican Use parishes. The world's first such ordinariate is the Personal Ordinariate of Our Lady of Walsingham of England and Wales. The personal ordinariate for the United States, the Personal Ordinariate of the Chair of Saint Peter, was established on January 1, 2012 in accordance with the apostolic constitution Anglicanorum coetibus of Pope Benedict XVI.^[3]

Personal Ordinariate of the Chair of Saint Peter

Gallery of Archdioceses

The seat of the Archdiocese of Agaña is Dulce Nombre de Maria Cathedral Basilica.
The seat of the Archdiocese of Anchorage is Holy Family Cathedral.
The seat of the Archdiocese of Atlanta is the Cathedral of Christ the King.
The co-seat of the Archdiocese of Baltimore is the Cathedral of Mary Our Queen.
The co-seat of the Archdiocese of Baltimore is the Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary.
The seat of the Archdiocese of Boston is the Cathedral of the Holy Cross.
The seat of the Archdiocese of Chicago is Holy Name Cathedral.
The seat of the Archdiocese of Cincinnati is Saint Peter in Chains Cathedral.
The seat of the Archdiocese of Denver is the Cathedral Basilica of the Immaculate Conception.
The seat of the Archdiocese of Detroit is the Cathedral of the Most Blessed Sacrament.
The seat of the Archdiocese of Dubuque is Saint Raphael's Cathedral.
The co-seat of the Archdiocese of Galveston-Houston is St. Mary's Cathedral Basilica.
The co-seat of the Archdiocese of Galveston-Houston is the Cathedral of the Sacred Heart.
The seat of the Archdiocese of Hartford is the Cathedral of St. Joseph.
The seat of the Archdiocese of Indianapolis is Saints Peter and Paul Cathedral.
The seat of the Archdiocese of Los Angeles is the Cathedral of Our Lady of the Angels.
The seat of the Archdiocese of Louisville is the Cathedral of the Assumption.
The seat of the Archdiocese of Miami is the Cathedral of St Mary.
The seat of the Archdiocese of Milwaukee is the Cathedral of St. John the Evangelist.
The seat of the Archdiocese of Mobile is the Cathedral Basilica of the Immaculate Conception.
The seat of the Archdiocese of New Orleans is Cathedral Basilica of Saint Louis, King of France.
The seat of the Archdiocese of New York is Saint Patrick’s Cathedral.
The seat of the Archdiocese of Newark is the Cathedral Basilica of the Sacred Heart.
The seat of the Archdiocese of Oklahoma City is the Cathedral of Our Lady of Perpetual Help.
The seat of the Archdiocese of Omaha is St. Cecilia Cathedral.
The seat of the Archdiocese of Philadelphia is the Cathedral-Basilica of SS. Peter & Paul.
The seat of the Archdiocese of Portland is St. Mary's Cathedral of the Immaculate Conception.
The seat of the Archdiocese of Saint Louis is the Cathedral Basilica of Saint Louis.
The co-seat of the Archdiocese of St. Paul-Minneapolis is the Cathedral of Saint Paul.
The co-seat of the Archdiocese of St. Paul-Minneapolis is the Basilica of Saint Mary.
The seat of the Archdiocese of San Antonio is the Cathedral of San Fernando.
The seat of the Archdiocese of San Francisco is the Cathedral of Saint Mary of the Assumption.
The seat of the Archdiocese of San Juan is the Cathedral of San Juan Bautista
The seat of the Archdiocese of Santa Fe is the Cathedral Basilica of St. Francis of Assisi.
The seat of the Archdiocese of Seattle is St. James Cathedral.
The seat of the Archdiocese of Washington is the Cathedral of St. Matthew the Apostle.

Gallery of Dioceses

The seat of the Diocese of Albany, NY is the Cathedral of the Immaculate Conception.
The seat of the Diocese of Alexandria, LA is St. Francis Xavier Cathedral.
The co-seat of the Diocese of Altoona-Johnstown, PA is the Cathedral of the Blessed Sacrament.
The co-seat of the Diocese of Altoona-Johnstown, PA is the Cathedral of Saint John Gualbert.
The seat of the Diocese of Arecibo, PR is Catedral de San Felipe Apóstol.
The seat of the Diocese of Arlington, VA is the Cathedral of Saint Thomas More.
The seat of the Diocese of Austin, TX is Saint Mary Cathedral.
The seat of the Diocese of Baker, OR is the Cathedral of Saint Francis de Sales.
The seat of the Diocese of Baton Rouge, LA is St. Joseph Cathedral.
The seat of the Diocese of Beaumont, TX is Saint Anthony Cathedral Basilica.
The seat of the Diocese of Bellville, IL is the Cathedral of Saint Peter.
The seat of the Diocese of Biloxi, MS is the Cathedral of the Nativity of the Blessed Virgin Mary.
The seat of the Diocese of Birmingham, AL is the Cathedral of Saint Paul.
The seat of the Diocese of Boise, ID is the Cathedral of St. John the Evangelist.
The seat of the Diocese of Bridgeport, CT is St. Augustine Cathedral.
The co-seat of the Diocese of Brooklyn, NY is the Cathedral Basilica of St. James.
The co-seat of the Diocese of Brooklyn, NY is the Co-Cathedral of St. Joseph.
The seat of the Diocese of Brownsville, TX is Immaculate Conception Cathedral.
The seat of the Diocese of Buffalo, NY is St. Joseph Cathedral.
The co-seat of the Diocese of Burlington, VT is the Cathedral of the Immaculate Conception.
The co-seat of the Diocese of Burlington, VT is the Cathedral of Saint Joseph.
The co-seat of the Diocese of Camden, NJ is the Cathedral of the Immaculate Conception.
The seat of the Diocese of Caguas, PR is the Cathedral Dulce Nombre de Jesus.
The seat of the Diocese of Chalan Kanoa, MP is Our Lady of Mount Carmel Cathedral.
The seat of the Diocese of Charleston, SC is the Cathedral of Saint John the Baptist.
The seat of the Diocese of Charlotte, NC is the Cathedral of Saint Patrick.
The seat of the Diocese of Cheyenne, WY is St. Mary's Cathedral.
The seat of the Diocese of Cleveland, OH is the Cathedral of St. John the Evangelist.
The seat of the Diocese of Colorado Springs, CO is St. Mary's Cathedral.
The seat of the Diocese of Columbus, OH is St. Joseph Cathedral.
The seat of the Diocese of Corpus Christi, TX is Corpus Christi Cathedral.
The seat of the Diocese of Covington, KY is the Cathedral Basilica of the Assumption.
The seat of the Diocese of Dallas, TX is the Cathedral Santuario de Guadalupe.
The seat of the Diocese of Davenport, IA is Sacred Heart Cathedral.
The seat of the Diocese of Des Moines, IA is St. Ambrose Cathedral.
The seat of the Diocese of El Paso, TX is the Cathedral of Saint Patrick.
The seat of the Diocese of Erie, PA is St. Peter Cathedral.
The seat of the Diocese of Evansville, IN is St. Benedict Cathedral.
The seat of the Diocese of Fairbanks, AK is Sacred Heart Cathedral.
The co-seat of the Diocese of Fajardo-Humacao, PR is the Catedral Santiago Apóstol.
The co-seat of the Diocese of Fajardo-Humacao, PR is the Concatedral Dulce Nombre de Jesús.
The seat of the Diocese of Fall River, MA is St. Mary's Cathedral.
The seat of the Diocese of Fargo, ND is the Cathedral of St. Mary.
The co-seat of the Diocese of Fort Wayne-South Bend, IN is the Cathedral of the Immaculate Conception.
The co-seat of the Diocese of Fort Wayne-South Bend, IN is St. Matthew Cathedral
The seat of the Diocese of Fort Worth, TX is St. Patrick Cathedral.
The seat of the Diocese of Gallup, NM is Sacred Heart Cathedral.
The seat of the Diocese of Gary, IN is the Cathedral of the Holy Angels.
The seat of the Diocese of Grand Island, NE is the Cathedral of the Nativity of the Blessed Virgin Mary.
The seat of the Diocese of Grand Rapids, MI is the Cathedral of Saint Andrew.
The seat of the Diocese of Green Bay, WI is the Cathedral of Saint Francis Xavier.
The seat of the Diocese of Greensburg, PA is the Cathedral of the Blessed Sacrament.
The seat of the Diocese of Helena, MT is the Cathedral of Saint Helena.
The co-seat of the Diocese of Honolulu, HI is the Cathedral of Our Lady of Peace.
The co-seat of the Diocese of Houma-Thibodaux, LA is the Cathedral of St. Francis de Sales.
The co-seat of the Diocese of Houma-Thibodaux, LA is St. Joseph Co-Cathedral
The seat of the Diocese of Jackson, MS is the Cathedral of St. Peter the Apostle.
The seat of the Diocese of Jefferson City, MO is the Cathedral of Saint Joseph.
The seat of the Diocese of Juneau, AK is the Cathedral of the Nativity of the Blessed Virgin Mary.
The co-seat of the Diocese of Kansas City-Saint Joseph, MO is the Cathedral of the Immaculate Conception.
The seat of the Diocese of La Crosse, WI is the Cathedral of Saint Joseph the Workman.
The seat of the Diocese of Lafayette, IN is the Cathedral of Saint Mary of the Immaculate Conception.
The seat of the Diocese of Lafayette, LA is St. John the Evangelist Cathedral.
The seat of the Diocese of Lake Charles, LA is the Cathedral of the Immaculate Conception.
The seat of the Diocese of Lansing, MI is St. Mary Cathedral.
The seat of the Diocese of Laredo, TX is the Cathedral of San Agustin.
The seat of the Diocese of Las Cruces, NM is the Cathedral of the Immaculate Heart of Mary.
The seat of the Diocese of Las Vegas, NV is Guardian Angel Cathedral.
The seat of the Diocese of Lexington, KY is the Cathedral of Christ the King.
The seat of the Diocese of Lincoln, NE is the Cathedral of the Risen Christ.
The seat of the Diocese of Madison, WI is Saint Raphael's Cathedral.
The seat of the Diocese of Manchester, NH is the Cathedral of St. Joseph.
The seat of the Diocese of Marquette, MI is St. Peter Cathedral.
The seat of the Diocese of Mayagüez, PR is the Catedral Nuestra Señora de la Candelaria.
The seat of the Diocese of Memphis, TN is the Cathedral of the Immaculate Conception.
The seat of the Diocese of Metuchen, NJ is St. Francis of Assisi Cathedral.
The seat of the Diocese of Monterey, CA is the Cathedral of San Carlos Borromeo.
The seat of the Diocese of Nashville, TN is the Cathedral of the Incarnation.
The seat of the Diocese of New Ulm, MN is the Cathedral of the Holy Trinity.
The seat of the Diocese of Norwich, CT is the Cathedral of Saint Patrick.
The seat of the Diocese of Oakland, CA is the Cathedral of Christ the Light.
The seat of the Diocese of Owensboro, KY is St. Stephen’s Cathedral.
The seat of the Diocese of Palm Beach, FL is the Cathedral of St. Ignatius Loyola.
The seat of the Diocese of Paterson, NJ is the Cathedral of St. John the Baptist.
The co-seat of the Diocese of Pensacola-Tallahassee, FL is the Co-Cathedral of St. Thomas More.
The seat of the Diocese of Peoria, IL is the Cathedral of Saint Mary of the Immaculate Conception.
The seat of the Diocese of Phoenix, AZ is the Cathedral of Saints Simon and Jude
The seat of the Diocese of Pittsburgh, PA is St. Paul's Cathedral.
The seat of the Diocese of Ponce, PR is the Catedral de Nuestra Señora de Guadalupe.
The seat of the Diocese of Portland, ME is the Cathedral of the Immaculate Conception.
The seat of the Diocese of Providence, RI is the Cathedral of Saints Peter and Paul.
The seat of the Diocese of Pueblo, CO is the Cathedral of the Sacred Heart.
The seat of the Diocese of Raleigh, NC is Sacred Heart Cathedral.
The seat of the Diocese of Reno, NV is Saint Thomas Aquinas Cathedral.
The seat of the Diocese of Richmond, VA is the Cathedral of the Sacred Heart.
The seat of the Diocese of Rochester, NY is Sacred Heart Cathedral.
The seat of the Diocese of Rockford, IL is the Cathedral of Saint Peter.
The seat of the Diocese of Rockville Centre, NY is St. Agnes Cathedral.
The seat of the Diocese of Sacramento, CA is the Cathedral of the Blessed Sacrament.
The seat of the Diocese of Saginaw, MI is the Cathedral of Mary of the Assumption.
The seat of the Diocese of Salt Lake City, UT is the Cathedral of the Madeleine.
The seat of the Diocese of San Diego, CA is St. Joseph Cathedral.
The seat of the Diocese of San Jose, CA is the Cathedral Basilica of St. Joseph.
The seat of the Diocese of Savannah, GA is the Cathedral of St. John the Baptist.
The seat of the Diocese of Scranton, PA is St. Peter's Cathedral.
The seat of the Diocese of Shreveport, LA is the Cathedral of St. John Berchmans
The seat of the Diocese of Sioux City, IA is the Cathedral of the Epiphany.
The seat of the Diocese of Sioux Falls, SD is St. Joseph Cathedral.
The seat of the Diocese of Spokane, WA is the Cathedral of Our Lady of Lourdes.
The seat of the Diocese of Springfield, IL is the Cathedral of the Immaculate Conception.
The seat of the Diocese of Springfield, MA is St. Michael's Cathedral.
The co-seat of the Diocese of Springfield-Cape Girardeau, MO is the Cathedral of St. Mary of the Annunciation.
The seat of the Diocese of St. Augustine, FL is the Cathedral Basilica of St. Augustine.
The seat of the Diocese of St. Cloud, MN is the Cathedral of Saint Mary.
The seat of the Diocese of St. Petersburg, FL is the Cathedral of Saint Jude the Apostle.
The seat of the Diocese of St. Thomas, VI is Saints Peter and Paul Cathedral.
The seat of the Diocese of Steubenville, OH is Holy Name Cathedral.
The seat of the Diocese of Superior, WI is the Cathedral of Christ the King.
The seat of the Diocese of Syracuse, NY is the Cathedral of the Immaculate Conception.
The seat of the Diocese of Toledo, OH is Our Lady, Queen of the Most Holy Rosary Cathedral.
The seat of the Diocese of Trenton, NJ is the Cathedral of St. Mary of the Assumption.
The seat of the Diocese of Tucson, AZ is the Cathedral of Saint Augustine.
The seat of the Diocese of Tulsa, OK is Holy Family Cathedral.
The seat of the Diocese of Tyler, TX is the Cathedral of the Immaculate Conception.
The co-seat of the Diocese of Wheeling-Charleston, WV is the Cathedral of Saint Joseph.
The seat of the Diocese of Wilmington, DE is the Cathedral of the Saint Peter.
The seat of the Diocese of Winona, MN is the Cathedral of the Sacred Heart.
The seat of the Diocese of Worcester, MA is the Cathedral of Saint Paul.
The seat of the Diocese of Yakima, WA is St. Paul Cathedral.
The seat of the Diocese of Youngstown, OH is St. Columba Cathedral.

Former Dioceses

Diocese	Cathedral	History	Ref.
Roman Catholic Diocese of Allegheny	St. Peter's Church	•1876.01.11: Established as Diocese of Allegheny from Diocese of Pittsburgh •1889.07.01: Suppressed to Diocese of Pittsburgh •1971: Restored as Titular Episcopal See of Allegheny	^[8]
Roman Catholic Diocese of Alton	Church of Sts. Peter and Paul	•1857.01.09: Established as Diocese of Alton from the suppressed Diocese of Quincy •1887.01.07: Lost territory to establish Diocese of Belleville •1923.10.26: Suppressed to establish Diocese of Springfield in Illinois •1995: Restored as Titular Episcopal See of Alton	^[9]
Roman Catholic Diocese of Bardstown	Basilica of St. Joseph Proto-Cathedral	•1808.04.08: Established as Diocese of Bardstown from Diocese of Baltimore •1821.06.19: Lost territory to establish Diocese of Cincinnati •1834.05.06: Lost territory to establish Diocese of Vincennes •1837.07.28: Lost territory to establish Diocese of Nashville •1841.02.13: Suppressed to establish Diocese of Louisville •1995: Restored as Titular Episcopal See of Bardstown	^[10]
Roman Catholic Diocese of Both Californias		•1840.04.27: Established as Diocese of Both Californias from the Diocese of Sonora •1849.11.20: Suppressed to establish the Diocese of Monterey •1996: Restored as Titular Episcopal See of California	^[11]^[12]
Roman Catholic Diocese of Concordia	Our Lady of Perpetual Help Church	•1887.08.02: Established as Diocese of Concordia from Diocese of Leavenworth •1944.12.23: Suppressed to establish Diocese of Salina •1995: Restored as Titular Episcopal See of Concordia	^[13]
Roman Catholic Diocese of Grass Valley	St. Patrick Church	•1860.09.27: Established as Apostolic Vicariate of Marysville from Metropolitan Archdiocese of San Francisco •1868.03.22: Promoted as Diocese of Grass Valley •1886.05.28: Suppressed to establish Diocese of Sacramento •1995: Restored as Titular Episcopal See of Grass Valley	^[14]
Roman Catholic Diocese of Jamestown	Basilica of St. James	•1889.11.10: Established as Diocese of Jamestown from Apostolic Vicariate of Dakota •1897.04.06: Suppressed to establish Diocese of Fargo •1995: Restored as Titular Episcopal See of Jamestown	^[15]
Roman Catholic Diocese of Kearney		•1912.03.08: Established as Diocese of Kearney from Diocese of Omaha •1917.04.11: Suppressed to establish Diocese of Grand Island •1995: Restored as Titular Episcopal See of Kearney	^[16]
Roman Catholic Diocese of Lead	St. Patrick’s Church	•1902.08.04: Established as Diocese of Lead from Diocese of Sioux Falls •1930.08.01: Suppressed to establish Diocese of Rapid City •1995: Restored as Titular Episcopal See of Lead	^[17]
Roman Catholic Diocese of Leavenworth	Church of the Immaculate Conception	•1850.07.19: Established as Apostolic Vicariate of Indian Territory East of the Rocky Mountains from Diocese of New Orleans •1857.01.06: Lost territory to establish Apostolic Vicariate of Nebraska •1857: Renamed as Apostolic Vicariate of Kansas •1877.05.22: Promoted as Diocese of Leavenworth •1887.08.02: Lost territory to establish Diocese of Wichita and Diocese of Concordia •1891.05.29: Renamed as Diocese of Kansas City, Kansas •1897.03.05: Renamed as Diocese of Leavenworth •1947.05.10: Suppressed to establish Diocese of Kansas City •1995: Restored as Titular Episcopal See of Leavenworth	^[18]
Roman Catholic Diocese of Natchez	St. Mary Basilica	•1826.07.18: Established as Apostolic Vicariate of Mississippi from Diocese of Louisiana •1837.07.28: Promoted as Diocese of Natchez •1956.12.18: Renamed as Diocese of Natchez–Jackson •1977.03.01: Suppressed as Titular Episcopal See of Natchez to establish Diocese of Biloxi and Diocese of Jackson	^[19]
Roman Catholic Diocese of Natchitoches	Basilica of the Immaculate Conception	•1853.07.29: Established as Diocese of Natchitoches from Metropolitan Archdiocese of New Orleans •1910.08.06: Suppressed to establish Diocese of Alexandria •1995: Restored as Titular Episcopal See of Natchitoches	^[20]
Roman Catholic Diocese of Nesqually	Proto-Cathedral of St. James the Greater	•1850.05.31: Established as Diocese of Nesqually from Diocese of Walla Walla •1853.07.29: Gained territory from the suppressed Diocese of Walla Walla •1907.09.11: Suppressed to establish Diocese of Seattle •1995: Restored as Titular Episcopal See of Nesqually	^[21]
Roman Catholic Diocese of Oregon City	St. John the Apostle Church	•1843.12.01: Established as Apostolic Vicariate of Oregon from Metropolitan Archdiocese of Baltimore and Archdiocese of Québec •1846.07.24: Promoted as Diocese of Oregon City, lost territory to establish Diocese of Vancouver Island and Diocese of Walla Walla •1850.07.29: Promoted as Metropolitan Archdiocese of Oregon City •1868.03.03: Lost territory to establish Apostolic Vicariate of Idaho and Montana •1894: Gained territory from Diocese of Vancouver Island •1903.06.19: Lost territory to establish Diocese of Baker City •1928.09.26: Suppressed to establish Metropolitan Archdiocese of Portland in Oregon •1996: Restored as Titular Metropolitan See of Oregon City	^[22]
Roman Catholic Diocese of Quincy		•1853.07.29: Established as Diocese of Quincy from Diocese of Chicago •1857.01.09: Suppressed to establish Diocese of Alton •1995: Restored as Titular Episcopal See of Quincy	^[23]
Roman Catholic Diocese of Sault Sainte Marie	Holy Name of Mary Pro-Cathedral	•1853.07.29: Established as Apostolic Vicariate of Upper Michigan from Diocese of Detroit •1857.01.09: Promoted as Diocese of Sault Sainte Marie •1865.10.23: Renamed as Diocese of Sault Sainte Marie–Marquette •1937.01.03: Suppressed to establish Diocese of Marquette •1995: Restored as Titular Episcopal See of Sault Sainte Marie •1996: Renamed as Titular Episcopal See of Sault Sainte Marie in Michigan	^[24]
Roman Catholic Diocese of Vincennes	Basilica of St. Francis Xavier	•1834.05.06: Established as Diocese of Vincennes from Diocese of Bardstown •1857.01.08: Lost territory to establish Diocese of Fort Wayne •1898.03.28: Suppressed to establish Diocese of Indianapolis •1995: Restored as Titular Episcopal See of Vincennes	^[25]
Roman Catholic Diocese of Walla Walla		•1846.07.24: Established as Diocese of Walla Walla from Apostolic Vicariate of Oregon •1850.05.31: Lost territory to establish Diocese of Nesqually •1853.07.29: Suppressed to establish Diocese of Nesqually •1971: Restored as Titular Episcopal See of Walla Walla	^[26]

Gallery of Former Seats

The former seat of the Diocese of Amarillo, TX is Sacred Heart Cathedral.
The former seat of the Diocese of Bardstown, KY is Basilica of St. Joseph Proto-Cathedral.
The former seat of the Diocese of Charleston, SC is Cathedral of Saint John and Saint Finbar.
The former seat of the Apostolic Vicariate of North Carolina is the Basilica Shrine of St. Mary.
The former seat of the Diocese of Cleveland, OH is St. Mary's on the Flats.
The former seat of the Diocese of Davenport, IA is St. Margaret's Cathedral.
The former seat of the Diocese of Dodge City, KS is Sacred Heart Cathedral
The former seat of the Diocese of Duluth, MN is Sacred Heart Cathedral.
The former seat of the Diocese of Fairbanks, AK is Church of the Immaculate Conception Church.
The former seat of the Archdiocese of Galveston-Houston, TX is Old Co-Cathedral of the Sacred Heart.
The former seat of the Archdiocese of Los Angeles, CA is Cathedral of Saint Vibiana.
The former seat of the Diocese of Monterey, CA is Mission Santa Barbara.
The former seat of the Diocese of Nashville, TN is the St. Mary of the Seven Sorrows Church.
The former seat of the Diocese of Natchez, MS is St. Mary Basilica.
The former seat of the Diocese of Natchitoches, LA is Basilica of the Immaculate Conception.
The former seat of the Diocese of Nesqually (Vancouver, WA) is the Proto-Cathedral of St. James the Greater.
The former seat of the Archdiocese of Newark, NJ is Saint Patrick Pro-Cathedral.
The former seat of the Archdiocese of New Orleans, LA is St. Patrick's Church.
The former seat of the Archdiocese of New York, NY is Basilica of St. Patrick's Old Cathedral.
The former seat of the Diocese of Oakland, CA is Cathedral of Saint Francis de Sales.
The former seat of the Archdiocese of Oklahoma City, OK is St. Joseph Old Cathedral.
The former seat of the Archdiocese of St. Louis, MO is Basilica of St. Louis, King of France.
The former seat of the Archdiocese of San Francisco, CA is Old Saint Mary's Cathedral.
The former seat of the Diocese of San Jose, CA is the Saint Patrick Proto-Cathedral.
The former seat of the Diocese of Sault Sainte Marie, MI is Holy Name of Mary Pro-Cathedral.
The former seat of the Diocese of Vincennes, IN is Basilica of St. Francis Xavier.

Footnotes

↑ On July 14, 2010, Pope Benedict XVI erected an apostolic exarchate (similar to an apostolic vicariate in the Latin Church) — the Syro-Malankara Catholic Exarchate in the United States — for Syro-Malankara Catholics in the United States. Although not the same as an eparchy (diocese), an exarchate is still led by a bishop.
↑ For exceptions, see Ecclesiastical province#Provincial boundary lines.
↑ 3.0 3.1 Cardinal Levada, William (January 1, 2012). "Decree of Erection of the Personal Ordinariate of the Chair of Saint Peter" (PDF). Holy See.
↑ Conferencia Episcopal Puertorriqueña (C.E.P.). GCatholic.org website. Retrieved 2011-02-13.
↑ 5.0 5.1 Maryland is unusual in that fourteen of its 23 counties belong to dioceses whose see cities are outside Maryland: (1) the nine counties of Maryland's Eastern Shore (Delmarva Peninsula) are part of the Diocese of Wilmington (Delaware) and (2) the five counties adjacent to the District of Columbia and in southern Maryland are part of the Archdiocese of Washington, which is a different province. Only the remaining nine counties and the City of Baltimore are part of the Archdiocese of Baltimore.
↑ 6.0 6.1 For other such dioceses, see Ecclesiastical province#Provincial boundary lines.
↑ 7.0 7.1 Fishers Island, a part of Suffolk County, New York, and north of Long Island, is part of the Diocese of Norwich, Connecticut, which is in the Province of Hartford.
↑ http://www.gcatholic.org/dioceses/former/t0097.htm
↑ http://www.gcatholic.org/dioceses/former/t0101.htm
↑ http://www.gcatholic.org/dioceses/former/t0275.htm
↑ http://www.dioceseofmonterey.org/about.aspx
↑ "California". Catholic-Hierarchy.org. David M. Cheney. Retrieved 21 January 2015.
↑ http://www.gcatholic.org/dioceses/former/t0556.htm
↑ http://www.gcatholic.org/dioceses/former/t0897.htm
↑ http://www.gcatholic.org/dioceses/former/t0949.htm
↑ http://www.gcatholic.org/dioceses/former/t0959.htm
↑ http://www.gcatholic.org/dioceses/former/t0993.htm
↑ http://www.gcatholic.org/dioceses/former/t0994.htm
↑ http://www.gcatholic.org/dioceses/former/t1229.htm
↑ http://www.gcatholic.org/dioceses/former/t1230.htm
↑ http://www.gcatholic.org/dioceses/former/t1253.htm
↑ http://www.gcatholic.org/dioceses/former/t1316.htm
↑ http://www.gcatholic.org/dioceses/former/t1440.htm
↑ http://www.gcatholic.org/dioceses/former/t1523.htm
↑ http://www.gcatholic.org/dioceses/former/t1973.htm
↑ http://www.gcatholic.org/dioceses/former/t1986.htm

External links

Roman Catholic Ecclesiastical Provinces in the United States

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