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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
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
Jewish Other Judaism 87 108,280 31.8
Assemblies of God Evangelical Protestant Pentecostal 84 14,632 4.3
Evangelical Lutheran Church in America Mainline Protestant Lutheran 74 31,960 9.4
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 45 6,829 2.0
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 37 13,317 3.9
Seventh-day Adventist Church Evangelical Protestant Adventist 36 5,934 1.7
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 34 9,593 2.8
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
Churches of Christ Evangelical Protestant Baptist 25 2,410 0.7
Salvation Army Evangelical Protestant Holiness 23 3,890 1.1
Church of the Nazarene Evangelical Protestant Holiness 20 1,964 0.6
Muslim Estimate Other Other Groups 20 29,647 8.7
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 20 8,952 2.6
Christian and Missionary Alliance, The Evangelical Protestant Holiness 19 1,773 0.5
Unitarian Universalist Association of Congregations Other Liberal 19 4,022 1.2
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 16 3,353 1.0
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 15 3,509 1.0
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 15 2,549 0.7
Conservative Baptist Association of America Evangelical Protestant Baptist 14 1,487 0.4
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 14 10,635 3.1
Bahá'í Other Other Groups 13 997 0.3
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 13 3,671 1.1
Buddhists Other Other Groups 12 --- ---
Friends (Quakers) Mainline Protestant European Free-Church 10 558 0.2
Christian Churches and Churches of Christ Evangelical Protestant Baptist 7 428 0.1
Church of God of Prophecy Evangelical Protestant Pentecostal 7 678 0.2
Independent, Non-Charismatic Churches Evangelical Protestant
----
7 3,740 1.1
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian-Reformed 6 1,607 0.5
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 6 699 0.2
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 6 458 0.1
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 5 339 0.1
General Association of Regular Baptist Churches Evangelical Protestant Baptist 5 820 0.2
Hindus Other Other Groups 5 --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 5 2,049 0.6
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 4 1,913 0.6
Christian Church (Disciples of Christ) Mainline Protestant Baptist 4 595 0.2
Community of Christ Other Latter-day Saints 4 266 0.1
Jain Other Other Groups 4 --- ---
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 4 --- ---
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 3 1,240 0.4
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 3 --- ---
International Churches of Christ Evangelical Protestant Baptist 3 678 0.2
Mennonite Church USA Evangelical Protestant European Free-Church 3 231 0.1
Sikh Other Other Groups 3 --- ---
Vineyard USA Evangelical Protestant Pentecostal 3 384 0.1
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 2 1,256 0.4
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 2 576 0.2
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 2 180 0.1
Free Methodist Church of North America Evangelical Protestant Holiness 2 508 0.1
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 2 118 0.0
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 2 219 0.1
Reformed Baptist Churches Evangelical Protestant Baptist 2 --- ---
Southwide Baptist Fellowship Evangelical Protestant Baptist 2 --- ---
Wesleyan Church, The Evangelical Protestant Holiness 2 420 0.1
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 2 282 0.1
American Baptist Association, The Evangelical Protestant Baptist 1 25 0.0
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox Eastern Liturgical (Orthodox) 1 516 0.2
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 1 575 0.2
Apostolic Christian Churches (Nazarene) Evangelical Protestant European Free-Church 1 35 0.0
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 1 420 0.1
Independent, Charismatic Churches Evangelical Protestant Pentecostal 1 1,800 0.5
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 1 40 0.0
International Pentecostal Church of Christ Evangelical Protestant Pentecostal 1 75 0.0
North American Baptist Conference Evangelical Protestant Baptist 1 12 0.0
Orthodox Church in America: Albanian Orthodox Archdiocese Orthodox Eastern Liturgical (Orthodox) 1 225 0.1
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 1 312 0.1
Pentecostal Church of God Evangelical Protestant Pentecostal 1 80 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 --- --- ---
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 --- --- ---
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 --- --- ---
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 --- --- ---
Seventh Day Baptist General Conference, USA and Canada Evangelical Protestant Baptist --- --- ---
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.