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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 % Change
Southern Baptist Convention Evangelical Protestant Baptist +20 +1,590 +28.0%
Seventh-day Adventist Church Evangelical Protestant Adventist +19 +2,815 +47.4%
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal +18 +2,550 +37.3%
Muslim Estimate Other Other Groups +16 -16,229 -54.7%
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist +7 +313 +9.3%
American Baptist Churches in the USA Mainline Protestant Baptist +6 -4,553 -10.1%
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed +6 +647 +141.3%
Assemblies of God Evangelical Protestant Pentecostal +5 +3,315 +22.7%
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement +4 -427 -71.8%
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist +4 +1,339 +36.5%
Free Methodist Church of North America Evangelical Protestant Holiness +4 +466 +91.7%
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) +3 +1,092 +10.3%
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) +3 +537 +21.1%
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed +2 -126 -18.0%
International Council of Community Churches Mainline Protestant Presbyterian-Reformed +2 --- ---
Pentecostal Church of God Evangelical Protestant Pentecostal +2 +247 +308.8%
Wesleyan Church, The Evangelical Protestant Holiness +2 -241 -57.4%
Church of God of Prophecy Evangelical Protestant Pentecostal +1 +471 +69.5%
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal +1 -47 -13.9%
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) +0 -910 -47.6%
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) +0 -195 -15.5%
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church +0 +0 +0.0%
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) +0 +80 +19.0%
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) +0 -240 -19.4%
Christian and Missionary Alliance, The Evangelical Protestant Holiness +0 +828 +46.7%
Church of God (Anderson, Indiana) Evangelical Protestant Holiness +0 -80 -44.4%
Church of the Nazarene Evangelical Protestant Holiness +0 +43 +2.2%
Conservative Baptist Association of America Evangelical Protestant Baptist +0 --- ---
International Churches of Christ Evangelical Protestant Baptist +0 -57 -8.4%
International Pentecostal Church of Christ Evangelical Protestant Pentecostal +0 +0 +0.0%
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran +0 -3,532 -26.5%
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups +0 +9 +7.6%
North American Baptist Conference Evangelical Protestant Baptist +0 --- ---
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed +0 -87 -39.7%
Reformed Baptist Churches Evangelical Protestant Baptist +0 --- ---
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) +0 --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) +0 -1,524 -74.4%
Unitarian Universalist Association of Congregations Other Liberal +0 -94 -2.3%
Vineyard USA Evangelical Protestant Pentecostal +0 +87 +22.7%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran +0 -39 -13.8%
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal -1 --- ---
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement -1 +271 +63.3%
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed -1 -331 -57.5%
Community of Christ Other Latter-day Saints -1 +99 +37.2%
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist -1 -865 -24.7%
Evangelical Lutheran Church in America Mainline Protestant Lutheran -1 -7,224 -22.6%
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed -1 -1,572 -17.6%
Salvation Army Evangelical Protestant Holiness -1 -50 -1.3%
Sikh Other Other Groups -1 --- ---
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints -2 +5,397 +56.3%
Churches of Christ Evangelical Protestant Restoration Movement -2 +208 +8.6%
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian-Reformed -2 -950 -59.1%
General Association of Regular Baptist Churches Evangelical Protestant Baptist -2 --- ---
Jain Other Other Groups -2 --- ---
Bahá'í Other Other Groups -5 +17 +1.7%
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed -5 -958 -21.9%
United Methodist Church, The Mainline Protestant Methodist/Pietist -9 -3,556 -6.9%
United Church of Christ Mainline Protestant Presbyterian-Reformed -11 -28,264 -22.7%
Catholic Church Catholic Catholicism -12 -119,626 -8.7%
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism -15 -14,289 -19.4%
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 --- --- ---
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: +49 -183,645 -10%

The population of Connecticut was 3,574,097 in 2010; in 2000 it was 3,405,565. The total population changed 4.9%. The adherent totals of the religious groups listed above (1,830,862) included 51.2% of the total population in 2010.

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.


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