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Metro-Area Membership Report
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Chicago-Naperville-Elgin, IL-IN-WI, Metropolitan Statistical Area

Religious Traditions, 2010

924,108 196,678 483,917 85,116 3,236,794 481,556 4,052,936
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 636 3,236,794 342.1
Non-denominational Evangelical Protestant
----
 872 425,089 44.9
Muslim Estimate Other Other Groups 94 308,375 32.6
Evangelical Lutheran Church in America Mainline Protestant Lutheran 274 140,280 14.8
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 250 127,121 13.4
United Methodist Church, The Mainline Protestant Methodist/Pietist 303 115,775 12.2
National Baptist Convention, USA, Inc. Black Protestant Baptist 129 91,407 9.7
Southern Baptist Convention Evangelical Protestant Baptist 324 74,837 7.9
United Church of Christ Mainline Protestant Presbyterian-Reformed 186 74,048 7.8
Assemblies of God Evangelical Protestant Pentecostal 145 71,875 7.6
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 171 60,061 6.3
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 31 46,669 4.9
Reform Judaism Other Judaism 32 39,305 4.2
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 114 36,383 3.8
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 70 35,010 3.7
American Baptist Churches in the USA Mainline Protestant Baptist 98 32,792 3.5
Seventh-day Adventist Church Evangelical Protestant Adventist 109 27,263 2.9
Church of God in Christ Black Protestant Pentecostal 125 27,235 2.9
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement 84 24,413 2.6
Conservative Judaism Other Judaism 21 20,792 2.2
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 74 20,497 2.2
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 54 20,496 2.2
Buddhism, Mahayana Other Other Groups 44 20,019 2.1
Progressive National Baptist Convention, Inc. Black Protestant Baptist 51 19,545 2.1
African Methodist Episcopal Church Black Protestant Methodist/Pietist 69 18,529 2.0
Orthodox Judaism Other Judaism 65 16,830 1.8
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 89 15,870 1.7
Reformed Church in America Mainline Protestant Presbyterian-Reformed 25 15,549 1.6
Church of the Nazarene Evangelical Protestant Holiness 75 13,725 1.5
National Missionary Baptist Convention, Inc. Black Protestant Baptist 39 13,595 1.4
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist 27 13,530 1.4
Churches of Christ Evangelical Protestant Restoration Movement 99 12,665 1.3
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 16 11,564 1.2
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 66 11,519 1.2
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 32 11,111 1.2
Hindu, Indian-American Hindu Temple Assoc. Other Other Groups 25 10,691 1.1
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 73 10,044 1.1
National Baptist Convention of America, Inc. Black Protestant Baptist 22 8,542 0.9
Buddhism, Theravada Other Other Groups 19 8,211 0.9
Salvation Army Evangelical Protestant Holiness 27 7,709 0.8
Christian and Missionary Alliance, The Evangelical Protestant Holiness 47 6,647 0.7
Hindu, Traditional Temples Other Other Groups 5 6,000 0.6
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran 5 5,922 0.6
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement 28 5,802 0.6
Unitarian Universalist Association of Congregations Other Liberal 24 5,663 0.6
Macedonian Orthodox Church: American Diocese Orthodox Eastern Liturgical (Orthodox) 3 4,900 0.5
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 18 4,651 0.5
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist 16 4,295 0.5
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 5 4,285 0.5
Bahá'í Other Other Groups 33 4,184 0.4
Vineyard USA Evangelical Protestant Pentecostal 18 4,139 0.4
Mennonite Church USA Evangelical Protestant European Free-Church 24 4,112 0.4
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 32 4,012 0.4
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 30 3,514 0.4
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 11 2,758 0.3
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) 3 2,600 0.3
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 6 2,390 0.3
Reconstructionist Judaism Other Judaism 2 2,330 0.2
North American Baptist Conference Evangelical Protestant Baptist 12 2,277 0.2
International Churches of Christ Evangelical Protestant Baptist 1 2,271 0.2
Missionary Church, The Evangelical Protestant Holiness 16 2,267 0.2
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 14 2,156 0.2
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 2 1,600 0.2
Free Methodist Church of North America Evangelical Protestant Holiness 12 1,542 0.2
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed 3 1,394 0.1
Community of Christ Other Latter-day Saints 11 1,331 0.1
Wesleyan Church, The Evangelical Protestant Holiness 13 1,223 0.1
Church of the Brethren Evangelical Protestant European Free-Church 8 1,174 0.1
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 4 1,150 0.1
Buddhism, Vajrayana Other Other Groups 12 1,062 0.1
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 10 990 0.1
Pentecostal Church of God Evangelical Protestant Pentecostal 9 978 0.1
Hindu, Post Renaissance Other Other Groups 24 872 0.1
Protestant Reformed Churches in America Evangelical Protestant Presbyterian-Reformed 4 866 0.1
Romanian Orthodox Archdiocese in Americas Orthodox Eastern Liturgical (Orthodox) 2 740 0.1
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 4 734 0.1
Malankara Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) 4 720 0.1
Church of God of Prophecy Evangelical Protestant Pentecostal 13 679 0.1
Hindu, Renaissance Other Other Groups 5 661 0.1
Eritrean Orthodox Orthodox Eastern Liturgical (Orthodox) 2 610 0.1
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 4 595 0.1
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 2 580 0.1
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 4 579 0.1
Syriac Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) 2 560 0.1
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 3 522 0.1
Evangelical Lutheran Synod Evangelical Protestant Lutheran 3 507 0.1
Friends General Conference* Mainline Protestant European Free-Church 7 496 0.1
National Association of Free Will Baptists Evangelical Protestant Baptist 4 438 0.0
Bulgarian Eastern Orthodox Diocese of the USA, Canada and Australia Orthodox Eastern Liturgical (Orthodox) 1 425 0.0
Albanian Orthodox Diocese of America Orthodox Eastern Liturgical (Orthodox) 1 350 0.0
Friends General Conference and Friends United Meeting, dually aligned meetings* Mainline Protestant European Free-Church 2 299 0.0
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal 3 256 0.0
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 4 242 0.0
Zoroastrian Other Other Groups 1 220 0.0
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 4 167 0.0
Georgian Orthodox Parishes in the United States Orthodox Eastern Liturgical (Orthodox) 1 150 0.0
American Baptist Association, The Evangelical Protestant Baptist 2 108 0.0
Fellowship of Evangelical Churches Evangelical Protestant European Free-Church 1 72 0.0
Cumberland Presbyterian Church Evangelical Protestant Presbyterian-Reformed 2 60 0.0
Holy Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 1 55 0.0
Evangelical Congregational Church, The Evangelical Protestant Methodist/Pietist 3 49 0.0
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed 2 45 0.0
Apostolic Faith Mission of Portland, OR Evangelical Protestant Pentecostal 1 43 0.0
Friends United Meeting* Mainline Protestant European Free-Church 1 34 0.0
Reformed Presbyterian Church of North America Evangelical Protestant Presbyterian-Reformed 1 30 0.0
Evangelical Friends Church International* Evangelical Protestant European Free-Church 1 21 0.0
Alliance of Baptists Mainline Protestant Baptist 2 --- ---
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism 23 --- ---
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 8 --- ---
Brethren In Christ Church Evangelical Protestant European Free-Church 1 --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 9 --- ---
Christian Brethren Evangelical Protestant Ind. Fundamentalist 7 --- ---
Church of Christ (Holiness), U.S.A. Evangelical Protestant Holiness 9 --- ---
Church of Christ, Scientist Other Christian Science 40 --- ---
Church of God (Seventh Day) Evangelical Protestant Adventist 7 --- ---
Church of Our Lord Jesus Christ of the Apostolic Faith, Inc. Black Protestant Pentecostal 3 --- ---
Church of the Lutheran Confession Evangelical Protestant Lutheran 1 --- ---
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian-Reformed 1 --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist 19 --- ---
Cumberland Presbyterian Church in America Black Protestant Presbyterian-Reformed 1 --- ---
Elim Fellowship Evangelical Protestant Pentecostal 1 --- ---
Ethiopian Orthodox Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Evangelical Association of Reformed, and Congregational Christian Churches Evangelical Protestant Presbyterian-Reformed 1 --- ---
Full Gospel Baptist Church Fellowship Black Protestant Baptist 34 --- ---
Fundamental Baptist Fellowship Evangelical Protestant Baptist 1 --- ---
General Association of Regular Baptist Churches Evangelical Protestant Baptist 39 --- ---
Grace Gospel Fellowship Evangelical Protestant Ind. Fundamentalist 2 --- ---
Hungarian Reformed Churches (Additional) Mainline Protestant Presbyterian-Reformed 2 --- ---
Independent Baptist Fellowship International Evangelical Protestant Baptist 1 --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist 36 --- ---
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 13 --- ---
Jain Other Other Groups 1 --- ---
Jehovah's Witnesses Other Adventist 111 --- ---
Korean Presbyterian Church Abroad Evangelical Protestant Presbyterian-Reformed 8 --- ---
Korean Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 11 --- ---
Korean-American Presbyterian Church Evangelical Protestant Presbyterian-Reformed 7 --- ---
National Spiritualist Association of Churches Other Spiritualist 6 --- ---
New Apostolic Church of North America, National Organization of the Other Other Groups 12 --- ---
New Testament Association of Independent Baptist Churches Evangelical Protestant Baptist 3 --- ---
North American Lutheran Church Evangelical Protestant Lutheran 3 --- ---
Pentecostal Fire-Baptized Holiness Church Evangelical Protestant Pentecostal 3 --- ---
Polish National Catholic Church Catholic Catholicism 8 --- ---
Reformed Baptist Churches Evangelical Protestant Baptist 5 --- ---
Sikh Other Other Groups 5 --- ---
Swedenborgian Church Other Spiritualist 2 --- ---
Unaffiliated Friends Meetings* Mainline Protestant European Free-Church 2 --- ---
Union of Messianic Jewish Congregations Other Judaism 4 --- ---
United Holy Church of America, Inc. Black Protestant Pentecostal 4 --- ---
United Pentecostal Church International Evangelical Protestant Pentecostal 62 --- ---
United Pentecostal Council of the Assemblies of God Evangelical Protestant Pentecostal 4 --- ---
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 7 --- ---
Unity Churches, Association of Other Other Groups 15 --- ---
Totals: 6,160 5,408,169  

The population of the Chicago-Naperville-Elgin, IL-IN-WI, Metropolitan Statistical Area was 9,461,105 in 2010; in 2000 it was 9,098,316. The total population changed 4.0%. The adherent totals of the religious groups listed above (5,408,169) included 57.2% of the total population in 2010.

Chicago-Naperville-Elgin, IL-IN-WI, Metropolitan Statistical Area includes the following 14 counties: Cook County, Illinois, DeKalb County, Illinois, DuPage County, Illinois, Grundy County, Illinois, Jasper County, Indiana, Kane County, Illinois, Kendall County, Illinois, Kenosha County, Wisconsin, Lake County, Indiana, Lake County, Illinois, McHenry County, Illinois, Newton County, Indiana, Porter County, Indiana, Will County, Illinois.

* 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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