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Chicago-Naperville-Elgin, IL-IN-WI Metro Area - Metro Area Membership Report (2020)

Exact definitions of "congregations" and "adherents" vary by religious body. Congregations may be parishes, churches, synagogues, mosques, temples, or another site where a religious body has regularly scheduled worship services. Adherents generally are members, children who are not members, and others who are not members but are considered participants in the congregation.

[More information on the data sources]

Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Catholic Church Catholic Catholic Liturgical Family 587 2,750,946 286.01
Muslim Estimate Islam Islam Family 111 454,946 47.30
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 893 415,758 43.22
National Missionary Baptist Convention of America Black Protestant Baptist Family 364 149,850 15.58
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 233 101,784 10.58
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 229 86,573 9.00
United Methodist Church Mainline Protestant Methodist Family 283 82,911 8.62
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 312 79,436 8.26
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 157 68,408 7.11
National Baptist Convention, USA, Inc. Black Protestant Baptist Family 97 68,228 7.09
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 174 59,121 6.15
Church of God in Christ Black Protestant Pentecostal Family 172 54,228 5.64
Southern Baptist Convention Evangelical Protestant Baptist Family 309 47,919 4.98
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 144 39,652 4.12
Reform Judaism Judaism Judaism Family 28 33,615 3.49
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 65 33,104 3.44
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) Family 29 32,620 3.39
Episcopal Church Mainline Protestant Anglican/Episcopal Family 107 29,537 3.07
Seventh-day Adventist Church Evangelical Protestant Adventist Family 113 27,914 2.90
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 74 27,470 2.86
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 90 24,273 2.52
Buddhism, Mahayana Buddhism Buddhism Family 43 21,085 2.19
Hindu Yoga and Meditation Hinduism 40 20,617 2.14
African Methodist Episcopal Church Black Protestant Methodist Family 65 19,913 2.07
Hindu, Traditional Temples Hinduism Hinduism Family 14 19,880 2.07
Progressive National Baptist Convention, Inc. Black Protestant Baptist Family 40 18,528 1.93
Conservative Judaism Judaism Judaism Family 17 17,626 1.83
Orthodox Judaism Judaism Judaism Family 41 16,250 1.69
Reformed Church in America Mainline Protestant Presbyterian/Reformed Family 19 15,743 1.64
Evangelical Covenant Church Evangelical Protestant Methodist Family 63 13,290 1.38
Church of the Nazarene Evangelical Protestant Holiness Family 79 13,113 1.36
Christian Reformed Church in North America Evangelical Protestant Presbyterian/Reformed Family 51 12,881 1.34
Christian Methodist Episcopal Church Black Protestant Methodist Family 31 12,202 1.27
Churches of Christ Evangelical Protestant Restorationists Family 94 11,512 1.20
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran Family 29 10,909 1.13
Buddhism, Theravada Buddhism Buddhism Family 15 10,866 1.13
Serbian Orthodox Church in North and South America Orthodox Eastern Liturgical (Orthodox) Family 14 9,365 0.97
Macedonian Orthodox Church: American-Canadian Diocese Orthodox Eastern Liturgical (Orthodox) Family 3 6,975 0.73
National Baptist Convention of America International, Inc. Black Protestant Baptist Family 12 6,746 0.70
Church of God (Anderson, Indiana) Evangelical Protestant Holiness Family 29 6,248 0.65
Pentecostal Assemblies of the World Black Protestant Pentecostal Family 5 5,950 0.62
Presbyterian Church in America Evangelical Protestant Presbyterian/Reformed Family 33 5,453 0.57
Full Gospel Christian Assemblies International Evangelical Protestant Pentecostal Family 14 5,400 0.56
Christian and Missionary Alliance Evangelical Protestant Holiness Family 37 5,398 0.56
Unitarian Universalist Association Other Christians Liberal Family 23 4,900 0.51
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal Family 69 4,813 0.50
African Methodist Episcopal Zion Church Black Protestant Methodist Family 15 4,616 0.48
Mennonite Church, USA Evangelical Protestant Mennonite/Amish Family 19 4,328 0.45
Baha'i Faith Other Other Groups Family 21 4,125 0.43
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 4 3,837 0.40
Orthodox Church in America, The Orthodox Eastern Liturgical (Orthodox) Family 20 3,551 0.37
Buddhism, Vajrayana Buddhism Buddhism Family 10 3,410 0.35
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran Family 8 3,278 0.34
Association of Vineyard Churches Evangelical Protestant Pentecostal Family 17 3,220 0.33
Full Gospel Baptist Church Fellowship International Black Protestant Baptist Family 15 3,150 0.33
Salvation Army Evangelical Protestant Holiness Family 26 2,710 0.28
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 29 2,601 0.27
Ethiopian Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 3 2,500 0.26
Reconstructionist Judaism Judaism Judaism Family 4 2,379 0.25
International Churches of Christ Evangelical Protestant Baptist Family 2 2,245 0.23
Antiochian Orthodox Christian Archdiocese of North America Orthodox Eastern Liturgical (Orthodox) Family 4 2,175 0.23
United Reformed Churches in North America Evangelical Protestant Presbyterian/Reformed Family 8 1,790 0.19
Association of Free Lutheran Congregations Evangelical Protestant Lutheran Family 8 1,702 0.18
Missionary Church, The Evangelical Protestant Holiness Family 19 1,598 0.17
Ukrainian Orthodox Church of the U.S.A. Orthodox Eastern Liturgical (Orthodox) Family 4 1,475 0.15
International Church of the Foursquare Gospel Evangelical Protestant Pentecostal Family 17 1,386 0.14
Advent Christian Church Evangelical Protestant Adventist Family 4 1,247 0.13
Malankara (Indian) Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) Family 4 1,216 0.13
Church of our Lord Jesus Christ of the Apostolic Faith, Inc. Black Protestant Pentecostal Family 5 1,050 0.11
Church of the Brethren Evangelical Protestant Friends/Brethren Family 7 973 0.10
Wesleyan Church Evangelical Protestant Holiness Family 7 944 0.10
Protestant Reformed Churches in America Evangelical Protestant Presbyterian/Reformed Family 4 898 0.09
Bulgarian Eastern Orthodox Diocese of the USA, Canada, and Australia Orthodox Eastern Liturgical (Orthodox) Family 2 890 0.09
Eritrean Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 2 880 0.09
Romanian Orthodox Metropolia of the Americas Orthodox Eastern Liturgical (Orthodox) Family 2 792 0.08
Armenian Apostolic Church (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) Family 4 640 0.07
Apostolic Christian Church of America Evangelical Protestant Froehlich Churches Family 4 604 0.06
Free Methodist Church – USA Evangelical Protestant Holiness Family 10 573 0.06
Albanian Orthodox Diocese of America Orthodox Eastern Liturgical (Orthodox) Family 1 500 0.05
National Association of Free Will Baptists Evangelical Protestant Baptist Family 5 473 0.05
Friends General Conference Mainline Protestant Friends/Brethren Family 7 462 0.05
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) Family 2 440 0.05
Evangelical Lutheran Synod Evangelical Protestant Lutheran Family 3 404 0.04
Armenian Apostolic Church (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) Family 2 385 0.04
Church of the Genuine Orthodox Christians of America Orthodox Eastern Liturgical (Orthodox) Family 2 350 0.04
Primitive Baptists Associations Evangelical Protestant Baptist Family 3 338 0.04
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian/Reformed Family 2 332 0.03
American Baptist Association Evangelical Protestant Baptist Family 1 272 0.03
National Association of Congregational Christian Churches Mainline Protestant Congregationalists (United Church of Christ) Family 4 251 0.03
Russian Orthodox Church Outside of Russia, The Orthodox Eastern Liturgical (Orthodox) Family 2 245 0.03
American Carpatho-Russian Orthodox Diocese of the USA Orthodox Eastern Liturgical (Orthodox) Family 3 213 0.02
United House of Prayer Black Protestant 1 210 0.02
Cumberland Presbyterian Church in America Black Protestant Presbyterian/Reformed Family 1 210 0.02
Open Bible Churches Evangelical Protestant Pentecostal Family 2 200 0.02
North American and Europe Region of the Knanaya Archdiocese of the Syriac Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) Family 1 160 0.02
Syrian (Syriac) Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) Family 2 160 0.02
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian/Reformed Family 1 147 0.02
General Association of General Baptists Evangelical Protestant Baptist Family 1 130 0.01
Friends General Conference and Friends United Meeting, dually aligned meetings Mainline Protestant Friends/Brethren Family 2 128 0.01
Georgian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) Family 1 100 0.01
Universal Fellowship of Metropolitan Community Churches Mainline Protestant Other Groups Family 3 98 0.01
Evangelical Friends Church International Evangelical Protestant Friends/Brethren Family 1 74 0.01
Cumberland Presbyterian Church Evangelical Protestant Presbyterian/Reformed Family 1 46 0.00
Independent Judaism Judaism 7 40 0.00
Fellowship of Evangelical Churches Evangelical Protestant Mennonite/Amish Family 1 35 0.00
Holy Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) Family 1 28 0.00
United Holy Church of America Black Protestant Pentecostal Family 1 24 0.00
Reformed Presbyterian Church of North America (Covenanters) Evangelical Protestant Presbyterian/Reformed Family 1 20 0.00
Northern New Salem Association of Old Regular Baptists. Evangelical Protestant Baptist Family 1 13 0.00
Swedenborgian Church Other Christians Spiritualist Family 1 4 0.00
Christadelphians Other Christians Other Groups Family 3
Churches of Christ in Christian Union Evangelical Protestant Holiness Family 2
Tao Other Other Groups Family 1
Vedanta Society Other Other Groups Family 1
American Ethical Union Other Liberal Family 1
Church of the Living God (Christian Workers for Fellowship) Black Protestant Pentecostal Family 4
Liberal Catholic Church, Province of the United States of America Other Christians Other Groups Family 1
Christian Congregation in North America Evangelical Protestant Pentecostal Family 2
Full Gospel Assemblies International Evangelical Protestant Pentecostal Family 1
Reformed Baptist Network Evangelical Protestant 1
The Church of God Evangelical Protestant 1
The Local Churches Evangelical Protestant 6
Unification Church Other Other Groups Family 1
Concordia Lutheran Conference Evangelical Protestant 3
Laestadian Lutheran Church Evangelical Protestant 1
Orthodox Old Roman Catholic Communion Catholic Other Groups Family 2
ECO: A Covenant Order of Evangelical Presbyterians Evangelical Protestant Presbyterian/Reformed Family 6
Anglican Province of Christ the King Mainline Protestant Anglican/Episcopal Family 1
Anglican Province of America Mainline Protestant 2
Fellowship of Christian Assemblies Evangelical Protestant Pentecostal Family 6
Grace Communion International Evangelical Protestant 4
United Church of God Other Christians Adventist Family 2
Every Nation Evangelical Protestant 1
Chabad Judaism Judaism 9
Alliance of Baptists Mainline Protestant Baptist Family 2
Anglican Church in North America Evangelical Protestant Anglican/Episcopal Family 21
Apostolic Faith Mission of Portland, Oregon Evangelical Protestant Pentecostal Family 1
Converge Worldwide Evangelical Protestant Baptist Family 2
Baptist Missionary Association of America Evangelical Protestant Baptist Family 3
Brethren in Christ Church Evangelical Protestant Friends/Brethren Family 1
Calvary Chapel Evangelical Protestant Pentecostal Family 1
Church of Christ (Holiness) U.S.A Evangelical Protestant Holiness Family 9
Church of Christ, Scientist Other Christians Christian Science Family 6
Unity Churches, Association of Other Christians Other Groups Family 15
General Conference of the Church of God (Seventh Day) Evangelical Protestant Adventist Family 9
Church of God of Prophecy Evangelical Protestant Pentecostal Family 13
Church of the Lutheran Confession Evangelical Protestant Lutheran Family 1
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian/Reformed Family 1
Community of Christ Evangelical Protestant Latter-day Saints (Mormonism) Family 8
Conservative Baptist Association of America (CBAmerica) Evangelical Protestant Baptist Family 14
Elim Fellowship Evangelical Protestant Pentecostal Family 1
Evangelical Congregational Church Evangelical Protestant Methodist Family 1
Evangelical Free Church of America Evangelical Protestant Methodist Family 84
Evangelical Presbyterian Church (1981) Evangelical Protestant Presbyterian/Reformed Family 4
General Church of the New Jerusalem Other Christians Spiritualist Family 2
Grace Gospel Fellowship Evangelical Protestant Independent Fundamentalist Family 1
International Council of Community Churches Mainline Protestant Presbyterian/Reformed Family 5
Jain Other Other Groups Family 1
National Spiritualist Association of Churches Other Spiritualist Family 2
Netherlands Reformed Congregations Evangelical Protestant Presbyterian/Reformed Family 1
New Testament Association of Independent Baptist Churches Evangelical Protestant Baptist Family 4
New Apostolic Church USA Other Christians Other Groups Family 6
North American Baptist Conference Evangelical Protestant Baptist Family 11
North American Lutheran Church Evangelical Protestant Lutheran Family 4
Orthodox Presbyterian Church Evangelical Protestant Presbyterian/Reformed Family 10
Pentecostal Church of God Evangelical Protestant Pentecostal Family 6
Pentecostal Fire-Baptized Holiness Church Evangelical Protestant Pentecostal Family 4
Polish National Catholic Church of America Catholic Catholic Liturgical Family 7
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 28
Reformed Episcopal Church Evangelical Protestant Anglican/Episcopal Family 1
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 32
American Sikh Council Other Other Groups Family 5
Union of Messianic Jewish Congregations Other Christians Other Groups Family 3
United Pentecostal Church International Evangelical Protestant Pentecostal Family 72
Federation of Zoroastrian Associations of North America Other Other Groups Family 1
           

Religious Traditions (1980 - 2020), Percent of Population


The population of this metro area was 9,618,502 in 2020. The adherent totals of the religious groups listed above (5,037,231) included 52.4% of the total population in 2020. The adherence rate is the number of adherents of a given group per 1,000 people in the general population.

Note that data collection methods for religious bodies change over time, affecting the comparability of statistics. For further information, see the U.S. Religion Census website at https://www.usreligioncensus.org/.

The 2020 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include data for 372 religious bodies or groups. Of these, the ASARB was able to gather data on congregations and adherents for 217 and on congregations only for 155.

[More information on the data sources]

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