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Lake 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 23 221,958 310.72
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 65 36,804 51.52
Muslim Estimate Islam Islam Family 6 22,030 30.84
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 19 10,099 14.14
Reform Judaism Judaism Judaism Family 6 6,747 9.45
Conservative Judaism Judaism Judaism Family 5 6,097 8.54
National Missionary Baptist Convention of America Black Protestant Baptist Family 10 5,290 7.41
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 21 5,264 7.37
United Methodist Church Mainline Protestant Methodist Family 16 4,985 6.98
National Baptist Convention, USA, Inc. Black Protestant Baptist Family 9 4,632 6.48
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 6 4,417 6.18
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 10 4,147 5.81
Episcopal Church Mainline Protestant Anglican/Episcopal Family 12 4,131 5.78
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 7 3,528 4.94
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran Family 7 2,492 3.49
Hindu, Traditional Temples Hinduism Hinduism Family 1 2,350 3.29
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) Family 2 1,800 2.52
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 10 1,541 2.16
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 9 1,522 2.13
Seventh-day Adventist Church Evangelical Protestant Adventist Family 6 1,432 2.00
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 3 1,363 1.91
Southern Baptist Convention Evangelical Protestant Baptist Family 17 1,269 1.78
Missionary Church, The Evangelical Protestant Holiness Family 6 977 1.37
Full Gospel Christian Assemblies International Evangelical Protestant Pentecostal Family 4 970 1.36
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran Family 1 912 1.28
Churches of Christ Evangelical Protestant Restorationists Family 9 885 1.24
Church of God in Christ Black Protestant Pentecostal Family 5 750 1.05
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 4 722 1.01
Church of the Nazarene Evangelical Protestant Holiness Family 8 696 0.97
African Methodist Episcopal Church Black Protestant Methodist Family 3 614 0.86
Hindu Yoga and Meditation Hinduism 3 582 0.81
Serbian Orthodox Church in North and South America Orthodox Eastern Liturgical (Orthodox) Family 1 570 0.80
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal Family 5 460 0.64
Baha'i Faith Other Other Groups Family 3 387 0.54
Unitarian Universalist Association Other Christians Liberal Family 2 380 0.53
Evangelical Covenant Church Evangelical Protestant Methodist Family 2 322 0.45
International Church of the Foursquare Gospel Evangelical Protestant Pentecostal Family 3 272 0.38
Full Gospel Baptist Church Fellowship International Black Protestant Baptist Family 1 210 0.29
Association of Vineyard Churches Evangelical Protestant Pentecostal Family 1 204 0.29
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 2 199 0.28
Friends General Conference Mainline Protestant Friends/Brethren Family 1 178 0.25
Presbyterian Church in America Evangelical Protestant Presbyterian/Reformed Family 3 162 0.23
North American and Europe Region of the Knanaya Archdiocese of the Syriac Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) Family 1 160 0.22
Christian and Missionary Alliance Evangelical Protestant Holiness Family 1 131 0.18
Free Methodist Church – USA Evangelical Protestant Holiness Family 1 96 0.13
Armenian Apostolic Church (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) Family 1 90 0.13
Salvation Army Evangelical Protestant Holiness Family 1 71 0.10
Mennonite Church, USA Evangelical Protestant Mennonite/Amish Family 1 39 0.05
Armenian Apostolic Church (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) Family 1 35 0.05
Reformed Presbyterian Church of North America (Covenanters) Evangelical Protestant Presbyterian/Reformed Family 1 20 0.03
Buddhism, Mahayana Buddhism Buddhism Family 3 20 0.03
Independent Judaism Judaism 1 0 0.00
Churches of Christ in Christian Union Evangelical Protestant Holiness Family 2
Chabad Judaism Judaism 7
Fellowship of Christian Assemblies Evangelical Protestant Pentecostal Family 1
The Local Churches Evangelical Protestant 1
Tao Other Other Groups Family 1
Laestadian Lutheran Church Evangelical Protestant 1
Anglican Church in North America Evangelical Protestant Anglican/Episcopal Family 2
Unity Churches, Association of Other Christians Other Groups Family 2
General Conference of the Church of God (Seventh Day) Evangelical Protestant Adventist Family 1
Church of God of Prophecy Evangelical Protestant Pentecostal Family 2
Community of Christ Evangelical Protestant Latter-day Saints (Mormonism) Family 1
Evangelical Congregational Church Evangelical Protestant Methodist Family 1
Evangelical Free Church of America Evangelical Protestant Methodist Family 15
Evangelical Presbyterian Church (1981) Evangelical Protestant Presbyterian/Reformed Family 2
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 1
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 1
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 1
Union of Messianic Jewish Congregations Other Christians Other Groups Family 2
United Pentecostal Church International Evangelical Protestant Pentecostal Family 1
           

Religious Traditions (1980 - 2020), Percent of Population


The population of this county was 714,342 in 2020. The adherent totals of the religious groups listed above (365,012) included 51.1% 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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