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Boone County, Iowa - 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 3 3,197 119.67
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 4 2,590 96.95
United Methodist Church Mainline Protestant Methodist Family 8 1,989 74.45
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 3 1,196 44.77
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 2 950 35.56
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 1 501 18.75
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 1 358 13.40
Christian and Missionary Alliance Evangelical Protestant Holiness Family 2 327 12.24
Southern Baptist Convention Evangelical Protestant Baptist Family 3 222 8.31
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 2 215 8.05
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 1 152 5.69
Churches of Christ Evangelical Protestant Restorationists Family 2 150 5.61
Open Bible Churches Evangelical Protestant Pentecostal Family 1 146 5.47
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 1 125 4.68
Church of the Nazarene Evangelical Protestant Holiness Family 1 68 2.55
Salvation Army Evangelical Protestant Holiness Family 1 65 2.43
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 1 60 2.25
Episcopal Church Mainline Protestant Anglican/Episcopal Family 1 14 0.52
Seventh-day Adventist Church Evangelical Protestant Adventist Family 1 14 0.52
Baha'i Faith Other Other Groups Family 0 11 0.41
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 2 0 0.00
New Testament Association of Independent Baptist Churches Evangelical Protestant Baptist Family 1
Church of God of Prophecy Evangelical Protestant Pentecostal Family 1
Evangelical Free Church of America Evangelical Protestant Methodist Family 2
Calvary Chapel Evangelical Protestant Pentecostal Family 1

Religious Traditions (1980 - 2020), Percent of Population

The population of this county was 26,715 in 2020. The adherent totals of the religious groups listed above (12,350) included 46.2% 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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