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DuPage County, Illinois - County 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 52 337,802 362.11
Muslim Estimate Islam Islam Family 18 71,090 76.21
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 75 45,986 49.29
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 25 19,130 20.51
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 27 16,933 18.15
United Methodist Church Mainline Protestant Methodist Family 28 13,616 14.60
Hindu, Traditional Temples Hinduism Hinduism Family 6 8,950 9.59
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 20 8,378 8.98
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 15 6,319 6.77
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 5 5,742 6.16
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 20 5,222 5.60
Episcopal Church Mainline Protestant Anglican/Episcopal Family 11 4,911 5.26
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) Family 2 4,100 4.40
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 8 4,032 4.32
Seventh-day Adventist Church Evangelical Protestant Adventist Family 20 3,694 3.96
African Methodist Episcopal Church Black Protestant Methodist Family 3 3,402 3.65
Christian and Missionary Alliance Evangelical Protestant Holiness Family 10 3,038 3.26
Christian Reformed Church in North America Evangelical Protestant Presbyterian/Reformed Family 7 3,034 3.25
Macedonian Orthodox Church: American-Canadian Diocese Orthodox Eastern Liturgical (Orthodox) Family 1 3,000 3.22
Southern Baptist Convention Evangelical Protestant Baptist Family 23 2,598 2.78
Hindu Yoga and Meditation Hinduism 10 2,482 2.66
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 16 2,201 2.36
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 1 1,917 2.05
Buddhism, Mahayana Buddhism Buddhism Family 7 1,819 1.95
Buddhism, Theravada Buddhism Buddhism Family 3 1,631 1.75
Evangelical Covenant Church Evangelical Protestant Methodist Family 5 1,278 1.37
Reform Judaism Judaism Judaism Family 1 1,215 1.30
Churches of Christ Evangelical Protestant Restorationists Family 7 1,095 1.17
Presbyterian Church in America Evangelical Protestant Presbyterian/Reformed Family 5 1,007 1.08
Orthodox Church in America, The Orthodox Eastern Liturgical (Orthodox) Family 3 952 1.02
Church of the Nazarene Evangelical Protestant Holiness Family 4 651 0.70
Malankara (Indian) Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) Family 1 608 0.65
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 7 583 0.62
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran Family 1 570 0.61
Unitarian Universalist Association Other Christians Liberal Family 2 459 0.49
Wesleyan Church Evangelical Protestant Holiness Family 2 423 0.45
Ethiopian Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 1 400 0.43
Salvation Army Evangelical Protestant Holiness Family 1 384 0.41
Baha'i Faith Other Other Groups Family 3 362 0.39
Church of the Brethren Evangelical Protestant Friends/Brethren Family 2 315 0.34
Reformed Church in America Mainline Protestant Presbyterian/Reformed Family 2 246 0.26
Ukrainian Orthodox Church of the U.S.A. Orthodox Eastern Liturgical (Orthodox) Family 1 220 0.24
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 3 205 0.22
Association of Vineyard Churches Evangelical Protestant Pentecostal Family 1 140 0.15
Evangelical Lutheran Synod Evangelical Protestant Lutheran Family 1 128 0.14
Church of God (Anderson, Indiana) Evangelical Protestant Holiness Family 1 120 0.13
Mennonite Church, USA Evangelical Protestant Mennonite/Amish Family 1 120 0.13
National Missionary Baptist Convention of America Black Protestant Baptist Family 1 100 0.11
Syrian (Syriac) Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) Family 1 100 0.11
Association of Free Lutheran Congregations Evangelical Protestant Lutheran Family 1 88 0.09
Antiochian Orthodox Christian Archdiocese of North America Orthodox Eastern Liturgical (Orthodox) Family 1 75 0.08
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal Family 3 65 0.07
Friends General Conference and Friends United Meeting, dually aligned meetings Mainline Protestant Friends/Brethren Family 1 51 0.05
Russian Orthodox Church Outside of Russia, The Orthodox Eastern Liturgical (Orthodox) Family 1 45 0.05
National Association of Congregational Christian Churches Mainline Protestant Congregationalists (United Church of Christ) Family 1 16 0.02
Christadelphians Other Christians Other Groups Family 2
Chabad Judaism Judaism 1
American Sikh Council Other Other Groups Family 2
The Local Churches Evangelical Protestant 1
United Church of God Other Christians Adventist Family 1
Christian Congregation in North America Evangelical Protestant Pentecostal Family 1
Liberal Catholic Church, Province of the United States of America Other Christians Other Groups Family 1
Anglican Church in North America Evangelical Protestant Anglican/Episcopal Family 5
Unity Churches, Association of Other Christians Other Groups Family 1
General Conference of the Church of God (Seventh Day) Evangelical Protestant Adventist Family 1
Community of Christ Evangelical Protestant Latter-day Saints (Mormonism) Family 1
Conservative Baptist Association of America (CBAmerica) Evangelical Protestant Baptist Family 2
Evangelical Free Church of America Evangelical Protestant Methodist Family 7
Evangelical Presbyterian Church (1981) Evangelical Protestant Presbyterian/Reformed Family 1
New Testament Association of Independent Baptist Churches Evangelical Protestant Baptist Family 1
New Apostolic Church USA Other Christians Other Groups Family 1
North American Baptist Conference Evangelical Protestant Baptist Family 1
Orthodox Presbyterian Church Evangelical Protestant Presbyterian/Reformed Family 2
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 5
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 6
United Pentecostal Church International Evangelical Protestant Pentecostal Family 10
Federation of Zoroastrian Associations of North America Other Other Groups Family 1
           

Religious Traditions (1980 - 2020), Percent of Population


The population of this county was 932,877 in 2020. The adherent totals of the religious groups listed above (593,048) included 63.6% 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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