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DeKalb 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 7 25,409 253.03
Muslim Estimate Islam Islam Family 1 4,326 43.08
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 6 4,231 42.13
United Methodist Church Mainline Protestant Methodist Family 12 4,021 40.04
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 13 3,280 32.66
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 3 2,130 21.21
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 8 1,630 16.23
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 4 1,498 14.92
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 3 1,386 13.80
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 3 1,255 12.50
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 5 930 9.26
National Missionary Baptist Convention of America Black Protestant Baptist Family 1 700 6.97
Southern Baptist Convention Evangelical Protestant Baptist Family 6 519 5.17
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 4 416 4.14
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran Family 2 270 2.69
International Church of the Foursquare Gospel Evangelical Protestant Pentecostal Family 2 252 2.51
Episcopal Church Mainline Protestant Anglican/Episcopal Family 2 202 2.01
Wesleyan Church Evangelical Protestant Holiness Family 1 198 1.97
Association of Free Lutheran Congregations Evangelical Protestant Lutheran Family 1 151 1.50
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) Family 1 100 1.00
Churches of Christ Evangelical Protestant Restorationists Family 2 99 0.99
Church of the Nazarene Evangelical Protestant Holiness Family 3 95 0.95
Unitarian Universalist Association Other Christians Liberal Family 2 91 0.91
Association of Vineyard Churches Evangelical Protestant Pentecostal Family 1 54 0.54
Seventh-day Adventist Church Evangelical Protestant Adventist Family 1 47 0.47
Baha'i Faith Other Other Groups Family 0 46 0.46
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 1 42 0.42
Salvation Army Evangelical Protestant Holiness Family 1 38 0.38
Evangelical Covenant Church Evangelical Protestant Methodist Family 2 14 0.14
Advent Christian Church Evangelical Protestant Adventist Family 1 14 0.14
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal Family 1 0 0.00
Christian Reformed Church in North America Evangelical Protestant Presbyterian/Reformed Family 1 0 0.00
Evangelical Free Church of America Evangelical Protestant Methodist Family 1
Conservative Baptist Association of America (CBAmerica) Evangelical Protestant Baptist Family 1
North American Lutheran Church Evangelical Protestant Lutheran Family 1
Community of Christ Evangelical Protestant Latter-day Saints (Mormonism) Family 1
United Pentecostal Church International Evangelical Protestant Pentecostal Family 3

Religious Traditions (1980 - 2020), Percent of Population

The population of this county was 100,420 in 2020. The adherent totals of the religious groups listed above (53,444) included 53.2% 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

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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