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