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Connecticut

Religious Traditions, 2010

157,336 22,969 281,174 19,632 1,254,340 95,411 1,743,235
Evangelical Protestant Black Protestant Mainline Protestant Orthodox Catholic Other Unclaimed

Congregational adherents include all full members, their children, and others who regularly attend services. The 2010 reports contain incomplete counts of congregations and adherents belonging to the eight largest historically African-American denominations. These denominations are not included in the 2000 reports and are largely missing from the 1990 and 1980 reports.
[More information on the data sources]

Reports


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Catholic Church Catholic Catholicism 411 1,372,562 403.0
United Church of Christ Mainline Protestant Presbyterian-Reformed 253 124,770 36.6
Jewish Other Judaism 87 108,280 31.8
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 186 73,550 21.6
United Methodist Church, The Mainline Protestant Methodist/Pietist 133 51,183 15.0
American Baptist Churches in the USA Mainline Protestant Baptist 116 45,225 13.3
Evangelical Lutheran Church in America Mainline Protestant Lutheran 74 31,960 9.4
Muslim Estimate Other Other Groups 20 29,647 8.7
Assemblies of God Evangelical Protestant Pentecostal 84 14,632 4.3
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 37 13,317 3.9
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 14 10,635 3.1
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 34 9,593 2.8
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 20 8,952 2.6
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 45 6,829 2.0
Seventh-day Adventist Church Evangelical Protestant Adventist 36 5,934 1.7
Southern Baptist Convention Evangelical Protestant Baptist 32 5,681 1.7
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 30 4,370 1.3
Unitarian Universalist Association of Congregations Other Liberal 19 4,022 1.2
Salvation Army Evangelical Protestant Holiness 23 3,890 1.1
Independent, Non-Charismatic Churches Evangelical Protestant
----
7 3,740 1.1
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 13 3,671 1.1
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 15 3,509 1.0
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 16 3,353 1.0
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 15 2,549 0.7
Churches of Christ Evangelical Protestant Baptist 25 2,410 0.7
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 5 2,049 0.6
Church of the Nazarene Evangelical Protestant Holiness 20 1,964 0.6
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 4 1,913 0.6
Independent, Charismatic Churches Evangelical Protestant Pentecostal 1 1,800 0.5
Christian and Missionary Alliance, The Evangelical Protestant Holiness 19 1,773 0.5
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian-Reformed 6 1,607 0.5
Conservative Baptist Association of America Evangelical Protestant Baptist 14 1,487 0.4
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 2 1,256 0.4
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 3 1,240 0.4
Bah' Other Other Groups 13 997 0.3
General Association of Regular Baptist Churches Evangelical Protestant Baptist 5 820 0.2
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 6 699 0.2
Church of God of Prophecy Evangelical Protestant Pentecostal 7 678 0.2
International Churches of Christ Evangelical Protestant Baptist 3 678 0.2
Christian Church (Disciples of Christ) Mainline Protestant Baptist 4 595 0.2
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 2 576 0.2
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 1 575 0.2
Friends (Quakers) Mainline Protestant European Free-Church 10 558 0.2
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox Eastern Liturgical (Orthodox) 1 516 0.2
Free Methodist Church of North America Evangelical Protestant Holiness 2 508 0.1
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 6 458 0.1
Christian Churches and Churches of Christ Evangelical Protestant Baptist 7 428 0.1
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 1 420 0.1
Wesleyan Church, The Evangelical Protestant Holiness 2 420 0.1
Vineyard USA Evangelical Protestant Pentecostal 3 384 0.1
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 5 339 0.1
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 1 312 0.1
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 2 282 0.1
Community of Christ Other Latter-day Saints 4 266 0.1
Mennonite Church USA Evangelical Protestant European Free-Church 3 231 0.1
Orthodox Church in America: Albanian Orthodox Archdiocese Orthodox Eastern Liturgical (Orthodox) 1 225 0.1
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 2 219 0.1
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 2 180 0.1
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 2 118 0.0
Pentecostal Church of God Evangelical Protestant Pentecostal 1 80 0.0
International Pentecostal Church of Christ Evangelical Protestant Pentecostal 1 75 0.0
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 1 40 0.0
Apostolic Christian Churches (Nazarene) Evangelical Protestant European Free-Church 1 35 0.0
American Baptist Association, The Evangelical Protestant Baptist 1 25 0.0
North American Baptist Conference Evangelical Protestant Baptist 1 12 0.0
African Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist --- --- ---
Alliance of Baptists Mainline Protestant Baptist --- --- ---
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism --- --- ---
Association of Reformed Baptist Churches of America Evangelical Protestant Baptist --- --- ---
Bible Fellowship Church Evangelical Protestant Holiness --- --- ---
Buddhists Other Other Groups 12 --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 3 --- ---
Christian Brethren Evangelical Protestant Ind. Fundamentalist --- --- ---
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
Church of Christ, Scientist Other Christian Science --- --- ---
Church of God (Seventh Day) Evangelical Protestant Adventist --- --- ---
Church of God in Christ Black Protestant Pentecostal --- --- ---
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church --- --- ---
Church of Our Lord Jesus Christ of the Apostolic Faith, Inc. Black Protestant Pentecostal --- --- ---
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran --- --- ---
Conservative Judaism Other Judaism --- --- ---
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) --- --- ---
Elim Fellowship Evangelical Protestant Pentecostal --- --- ---
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Friends General Conference and Friends United Meeting, dually aligned meetings* Mainline Protestant European Free-Church --- --- ---
Full Gospel Baptist Church Fellowship Black Protestant Baptist --- --- ---
Grace Brethren Churches, Fellowship of Mainline Protestant European Free-Church --- --- ---
Hindus Other Other Groups 5 --- ---
Hutterian Brethren Evangelical Protestant Communal --- --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist --- --- ---
International Fellowship of Christian Assemblies Evangelical Protestant
----
--- --- ---
International Pentecostal Holiness Church Evangelical Protestant Pentecostal --- --- ---
Jain Other Other Groups 4 --- ---
Jehovah's Witnesses Other Adventist --- --- ---
Korean Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed --- --- ---
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran --- --- ---
National Baptist Convention of America, Inc. Black Protestant Baptist --- --- ---
National Baptist Convention, USA, Inc. Black Protestant Baptist --- --- ---
National Missionary Baptist Convention, Inc. Black Protestant Baptist --- --- ---
National Spiritualist Association of Churches Other Spiritualist --- --- ---
New Apostolic Church of North America, National Organization of the Other Other Groups --- --- ---
Non-denominational Evangelical Protestant
----
--- --- ---
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal --- --- ---
Orthodox Judaism Other Judaism --- --- ---
Pentecostal Fire-Baptized Holiness Church Evangelical Protestant Pentecostal --- --- ---
Polish National Catholic Church Catholic Catholicism --- --- ---
Progressive National Baptist Convention, Inc. Black Protestant Baptist --- --- ---
Reconstructionist Judaism Other Judaism --- --- ---
Reform Judaism Other Judaism --- --- ---
Reformed Baptist Churches Evangelical Protestant Baptist 2 --- ---
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 4 --- ---
Seventh Day Baptist General Conference, USA and Canada Evangelical Protestant Baptist --- --- ---
Sikh Other Other Groups 3 --- ---
Southwide Baptist Fellowship Evangelical Protestant Baptist 2 --- ---
Tao Other Other Groups --- --- ---
Unaffiliated Friends Meetings* Mainline Protestant European Free-Church --- --- ---
Union of Messianic Jewish Congregations Other Judaism --- --- ---
United Catholic Church, Inc. Catholic Catholicism --- --- ---
United Holy Church of America, Inc. Black Protestant Pentecostal --- --- ---
United Pentecostal Church International Evangelical Protestant Pentecostal --- --- ---
United Pentecostal Council of the Assemblies of God Evangelical Protestant Pentecostal --- --- ---
Unity Churches, Association of Other Other Groups --- --- ---
Zoroastrian Other Other Groups --- --- ---
Totals: 1,955 1,971,102  

The population of Connecticut was 3,405,565 in 2000; in 1990 it was 3,287,116. The total population changed 3.6%. The adherent totals of the religious groups listed above (1,971,102) included 57.9% of the total population in 2000.

* In an effort to better match the ASARB standards for adherents, a few religious bodies changed the way their adherents were reported in 2010, including the Catholic Church, Amish groups, Friends groups, Jewish groups, the Church of Jesus Christ of Latter-day Saints, Non-denominational Christian Churches, and the United Methodist Church. This change does not affect any of the data in the newly released 2010 U.S. Religion Census: Religious Congregations & Membership Study. In fact, the data for these groups are now more comparable to that of other bodies than it was in previous decadal reports.

However, the change in methodology can distort assessments on growth or decline between 2000 and 2010 for each of these groups. County-level 2000 data using the new methodology are not readily available. ASARB staff has adjusted some 2000 county-level adherent statistics to allow for a more accurate picture on growth or decline. The revised maps and charts are now available on-line at www.usreligioncensus.org for those who are interested in these trends.

Source

2010 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include statistics for 236 religious groups, providing information on the number of their congregations and adherents within each state and county in the United States. Clifford Grammich, Kirk Hadaway, Richard Houseal, Dale E. Jones, Alexei Krindatch, Richie Stanley and Richard H. Taylor supervised the collection. These data originally appeared in 2010 U.S. Religion Census: Religious Congregations & Membership Study, published by the Association of Statisticians of American Religious Bodies (ASARB). [More information on the data collection]

The adherence rate provides the number of adherents of a particular group per 1,000 population. For example, in 2010 the Episcopal Church had an adherence rate of 7.6 in Autauga County, Alabama. This means that about 8 out of every 1,000 people in Autauga County were Episcopalian.