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Illinois

Religious Traditions, 2010

1,649,402 220,435 933,690 76,138 3,648,907 566,260 5,735,800
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
Independent, Non-Charismatic Churches Evangelical Protestant
----
47 50,545 4.1
International Fellowship of Bible Churches Evangelical Protestant
----
--- --- ---
Non-denominational Evangelical Protestant
----
--- --- ---
Church of God (Seventh Day) Evangelical Protestant Adventist --- --- ---
Church of God General Conference Evangelical Protestant Adventist 13 792 0.1
Jehovah's Witnesses Other Adventist --- --- ---
Seventh-day Adventist Church Evangelical Protestant Adventist 134 25,046 2.0
Alliance of Baptists Mainline Protestant Baptist --- --- ---
American Baptist Association, The Evangelical Protestant Baptist 19 1,146 0.1
American Baptist Churches in the USA Mainline Protestant Baptist 296 87,962 7.1
Association of Reformed Baptist Churches of America Evangelical Protestant Baptist --- --- ---
Baptist Missionary Association of America Evangelical Protestant Baptist 14 1,201 0.1
Conservative Baptist Association of America Evangelical Protestant Baptist 33 7,575 0.6
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 78 19,217 1.5
Full Gospel Baptist Church Fellowship Black Protestant Baptist --- --- ---
Fundamental Baptist Fellowship Evangelical Protestant Baptist --- --- ---
General Association of Regular Baptist Churches Evangelical Protestant Baptist 69 9,552 0.8
Independent Baptist Fellowship International Evangelical Protestant Baptist --- --- ---
International Churches of Christ Evangelical Protestant Baptist 4 5,108 0.4
National Association of Free Will Baptists Evangelical Protestant Baptist 41 4,351 0.4
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 Primitive Baptist Convention, USA Evangelical Protestant Baptist 5 669 0.1
New Testament Association of Independent Baptist Churches Evangelical Protestant Baptist --- --- ---
New Testament Association of Independent Baptist Churches and other Fundamental Bapti Evangelical Protestant Baptist 89 24,871 2.0
North American Baptist Conference Evangelical Protestant Baptist 11 2,012 0.2
Primitive Baptist Church, The Evangelical Protestant Baptist 33 --- ---
Progressive National Baptist Convention, Inc. Black Protestant Baptist --- --- ---
Progressive Primitive Baptists Evangelical Protestant Baptist 2 68 0.0
Reformed Baptist Churches Evangelical Protestant Baptist 3 --- ---
Separate Baptists in Christ Evangelical Protestant Baptist 8 567 0.0
Seventh Day Baptist General Conference, USA and Canada Evangelical Protestant Baptist --- --- ---
Southern Baptist Convention Evangelical Protestant Baptist 981 305,838 24.6
Southwide Baptist Fellowship Evangelical Protestant Baptist 7 --- ---
Catholic Church Catholic Catholicism 1,125 3,874,933 312.0
Polish National Catholic Church Catholic Catholicism --- --- ---
Church of Christ, Scientist Other Christian Science --- --- ---
Albanian Orthodox Diocese of America Orthodox Eastern Liturgical (Orthodox) 1 270 0.0
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 2 414 0.0
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 5 1,890 0.2
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox Eastern Liturgical (Orthodox) 4 22,785 1.8
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 3 1,421 0.1
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 5 4,296 0.3
Bulgarian Eastern Orthodox Diocese of the USA, Canada and Australia Orthodox Eastern Liturgical (Orthodox) 2 1,260 0.1
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) --- --- ---
Eritrean Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Ethiopian Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Georgian Orthodox Parishes in the United States Orthodox Eastern Liturgical (Orthodox) --- --- ---
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 35 36,801 3.0
Greek Orthodox Archdiocese of Vasiloupulis Orthodox Eastern Liturgical (Orthodox) 1 1,200 0.1
Holy Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 1 18 0.0
Macedonian Orthodox Church: American Diocese Orthodox Eastern Liturgical (Orthodox) 2 1,800 0.1
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 2 300 0.0
Malankara Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) 3 1,000 0.1
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 11 3,428 0.3
Orthodox Church in America: Bulgarian Diocese Orthodox Eastern Liturgical (Orthodox) 2 1,986 0.2
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 2 3,000 0.2
Patriarchal Parishes of the Russian Orthodox Church in the USA Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Romanian Orthodox Archdiocese in Americas Orthodox Eastern Liturgical (Orthodox) 1 525 0.0
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 2 --- ---
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 5 8,430 0.7
Serbian Orthodox Church in the USA (New Gracanica Metropolitanate) Orthodox Eastern Liturgical (Orthodox) 5 --- ---
Syriac Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) 1 270 0.0
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 4 1,728 0.1
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism --- --- ---
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 200 52,578 4.2
Amish Groups, undifferentiated* Evangelical Protestant European Free-Church --- --- ---
Amish; Other Groups Evangelical Protestant European Free-Church 5 431 0.0
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 19 9,812 0.8
Apostolic Christian Churches (Nazarene) Evangelical Protestant European Free-Church 4 558 0.0
Beachy Amish Mennonite Churches* Evangelical Protestant European Free-Church 4 367 0.0
Berea Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
Brethren Church, The (Ashland, Ohio) Evangelical Protestant European Free-Church 3 521 0.0
Brethren In Christ Church Evangelical Protestant European Free-Church 1 63 0.0
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church 1 30 0.0
Church of the Brethren Evangelical Protestant European Free-Church 45 6,206 0.5
Conservative Mennonite Conference Evangelical Protestant European Free-Church 2 375 0.0
Eastern Pennsylvania Mennonite Church Evangelical Protestant European Free-Church 3 286 0.0
Evangelical Friends Church International* Evangelical Protestant European Free-Church --- --- ---
Fellowship of Evangelical Churches Evangelical Protestant European Free-Church 12 2,442 0.2
Friends (Quakers) Mainline Protestant European Free-Church 26 2,358 0.2
Friends General Conference and Friends United Meeting, dually aligned meetings* Mainline Protestant European Free-Church --- --- ---
Friends General Conference* Mainline Protestant European Free-Church --- --- ---
Friends United Meeting* Mainline Protestant European Free-Church --- --- ---
Mennonite Church USA Evangelical Protestant European Free-Church 52 8,589 0.7
Mennonite; Other Groups Evangelical Protestant European Free-Church 3 186 0.0
Midwest Beachy Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
Old Order Amish Evangelical Protestant European Free-Church 34 2,306 0.2
Old Order Mennonite Evangelical Protestant European Free-Church 1 35 0.0
Reformed Mennonite Church Evangelical Protestant European Free-Church 1 53 0.0
Tampico Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
U.S. Mennonite Brethren Evangelical Protestant European Free-Church 1 14 0.0
Unaffiliated Conservative Amish Mennonite Church* Evangelical Protestant European Free-Church --- --- ---
Unaffiliated Friends Meetings* Mainline Protestant European Free-Church --- --- ---
Christian and Missionary Alliance, The Evangelical Protestant Holiness 54 6,222 0.5
Church of Christ (Holiness), U.S.A. Evangelical Protestant Holiness --- --- ---
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 105 10,028 0.8
Church of the Nazarene Evangelical Protestant Holiness 247 38,050 3.1
Evangelical Church, The Evangelical Protestant Holiness --- --- ---
Free Methodist Church of North America Evangelical Protestant Holiness 69 5,818 0.5
Missionary Church, The Evangelical Protestant Holiness 13 3,183 0.3
Salvation Army Evangelical Protestant Holiness 56 22,765 1.8
Wesleyan Church, The Evangelical Protestant Holiness 28 6,961 0.6
Christian Brethren Evangelical Protestant Ind. Fundamentalist --- --- ---
Grace Gospel Fellowship Evangelical Protestant Ind. Fundamentalist --- --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist --- --- ---
Conservative Judaism Other Judaism --- --- ---
Jewish Other Judaism 161 270,000 21.7
Orthodox Judaism Other Judaism --- --- ---
Reconstructionist Judaism Other Judaism --- --- ---
Reform Judaism Other Judaism --- --- ---
Union of Messianic Jewish Congregations Other Judaism --- --- ---
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 116 35,859 2.9
Community of Christ Other Latter-day Saints 54 4,395 0.4
Unitarian Universalist Association of Congregations Other Liberal 36 7,244 0.6
American Association of Lutheran Churches Evangelical Protestant Lutheran --- --- ---
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 15 3,959 0.3
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran --- --- ---
Church of the Lutheran Confession Evangelical Protestant Lutheran --- --- ---
Evangelical Lutheran Church in America Mainline Protestant Lutheran 553 279,724 22.5
Evangelical Lutheran Synod Evangelical Protestant Lutheran --- --- ---
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 521 278,008 22.4
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran --- --- ---
North American Lutheran Church Evangelical Protestant Lutheran --- --- ---
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 33 9,563 0.8
African Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist --- --- ---
Allegheny Wesleyan Methodist Connection Evangelical Protestant Methodist/Pietist 1 18 0.0
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
Church of the United Brethren in Christ Evangelical Protestant Methodist/Pietist --- --- ---
Evangelical Congregational Church, The Evangelical Protestant Methodist/Pietist --- --- ---
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 69 17,759 1.4
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 127 29,402 2.4
Evangelical Methodist Church Evangelical Protestant Methodist/Pietist --- --- ---
Moravian Church in America--Northern Province Mainline Protestant Methodist/Pietist 1 298 0.0
Primitive Methodist Church in the USA Evangelical Protestant Methodist/Pietist 1 61 0.0
United Methodist Church, The Mainline Protestant Methodist/Pietist 1,388 365,182 29.4
Bahá'í Other Other Groups 45 5,327 0.4
Buddhists Other Other Groups 63 --- ---
Hindus Other Other Groups 30 --- ---
Jain Other Other Groups 2 --- ---
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 6 359 0.0
Muslim Estimate Other Other Groups 79 125,203 10.1
New Apostolic Church of North America, National Organization of the Other Other Groups --- --- ---
Sikh Other Other Groups 3 --- ---
Tao Other Other Groups 1 --- ---
Unity Churches, Association of Other Other Groups --- --- ---
Zoroastrian Other Other Groups 3 --- ---
Apostolic Faith Mission of Portland, OR Evangelical Protestant Pentecostal --- --- ---
Assemblies of God Evangelical Protestant Pentecostal 337 96,893 7.8
Assemblies of God International Fellowship Evangelical Protestant Pentecostal --- --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 9 --- ---
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 123 18,246 1.5
Church of God in Christ Black Protestant Pentecostal --- --- ---
Church of God of Prophecy Evangelical Protestant Pentecostal 21 1,118 0.1
Church of Our Lord Jesus Christ of the Apostolic Faith, Inc. Black Protestant Pentecostal --- --- ---
Congregational Holiness Church Evangelical Protestant Pentecostal --- --- ---
Elim Fellowship Evangelical Protestant Pentecostal --- --- ---
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 56 10,785 0.9
Independent, Charismatic Churches Evangelical Protestant Pentecostal 17 11,398 0.9
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 6 223 0.0
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal --- --- ---
Pentecostal Church of God Evangelical Protestant Pentecostal 25 2,460 0.2
Pentecostal Fire-Baptized Holiness Church Evangelical Protestant Pentecostal --- --- ---
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 --- --- ---
Vineyard USA Evangelical Protestant Pentecostal 24 7,282 0.6
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 48 18,866 1.5
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed 27 4,413 0.4
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian-Reformed --- --- ---
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 10 2,146 0.2
Cumberland Presbyterian Church Evangelical Protestant Presbyterian-Reformed 40 2,959 0.2
Cumberland Presbyterian Church in America Black Protestant Presbyterian-Reformed --- --- ---
Evangelical Association of Reformed, and Congregational Christian Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed 4 694 0.1
Hungarian Reformed Churches (Additional) Mainline Protestant Presbyterian-Reformed --- --- ---
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 17 8,424 0.7
Korean Presbyterian Church Abroad Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean-American Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 29 4,979 0.4
Netherlands Reformed Congregations Evangelical Protestant Presbyterian-Reformed 1 31 0.0
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 8 808 0.1
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 453 133,977 10.8
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 44 8,570 0.7
Protestant Reformed Churches in America Evangelical Protestant Presbyterian-Reformed 3 654 0.1
Reformed Church in America Mainline Protestant Presbyterian-Reformed 53 17,936 1.4
Reformed Presbyterian Church of North America Evangelical Protestant Presbyterian-Reformed --- --- ---
United Church of Christ Mainline Protestant Presbyterian-Reformed 390 166,772 13.4
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 4 860 0.1
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement 170 56,638 4.6
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement 519 134,325 10.8
Churches of Christ Evangelical Protestant Restoration Movement 293 29,295 2.4
National Spiritualist Association of Churches Other Spiritualist --- --- ---
Swedenborgian Church Other Spiritualist --- --- ---
Totals: 10,140 6,867,625  

The population of Illinois was 12,419,293 in 2000; in 1990 it was 11,430,602. The total population changed 8.6%. The adherent totals of the religious groups listed above (6,867,625) included 55.3% 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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