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Boone 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 1 15,585 291.59
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 1 2,323 43.46
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 4 1,570 29.37
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 4 1,381 25.84
United Methodist Church Mainline Protestant Methodist Family 6 1,354 25.33
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 2 602 11.26
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 2 556 10.40
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 1 504 9.43
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 1 274 5.13
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 1 202 3.78
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 1 186 3.48
Evangelical Covenant Church Evangelical Protestant Methodist Family 1 139 2.60
Salvation Army Evangelical Protestant Holiness Family 1 94 1.76
Apostolic Christian Church of America Evangelical Protestant Froehlich Churches Family 1 68 1.27
Episcopal Church Mainline Protestant Anglican/Episcopal Family 1 65 1.22
Churches of Christ Evangelical Protestant Restorationists Family 1 58 1.09
Open Bible Churches Evangelical Protestant Pentecostal Family 1 46 0.86
Seventh-day Adventist Church Evangelical Protestant Adventist Family 1 39 0.73
Baha'i Faith Other Other Groups Family 0 4 0.07
United Pentecostal Church International Evangelical Protestant Pentecostal Family 2
Fellowship of Christian Assemblies Evangelical Protestant Pentecostal Family 1

Religious Traditions (1980 - 2020), Percent of Population

The population of this county was 53,448 in 2020. The adherent totals of the religious groups listed above (25,050) included 46.9% 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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