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Clinton 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 10 7,689 165.50
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 12 3,120 67.15
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 3 3,094 66.59
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 5 2,225 47.89
United Methodist Church Mainline Protestant Methodist Family 9 1,610 34.65
International Church of the Foursquare Gospel Evangelical Protestant Pentecostal Family 1 866 18.64
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 5 843 18.14
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 2 836 17.99
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 1 371 7.99
Association of Free Lutheran Congregations Evangelical Protestant Lutheran Family 1 312 6.72
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 1 242 5.21
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 5 220 4.74
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 2 198 4.26
Southern Baptist Convention Evangelical Protestant Baptist Family 1 186 4.00
Reformed Church in America Mainline Protestant Presbyterian/Reformed Family 1 128 2.76
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 1 122 2.63
African Methodist Episcopal Church Black Protestant Methodist Family 1 100 2.15
Episcopal Church Mainline Protestant Anglican/Episcopal Family 1 97 2.09
Salvation Army Evangelical Protestant Holiness Family 1 81 1.74
Muslim Estimate Islam Islam Family 1 65 1.40
Seventh-day Adventist Church Evangelical Protestant Adventist Family 1 38 0.82
Baha'i Faith Other Other Groups Family 0 18 0.39
Unitarian Universalist Association Other Christians Liberal Family 1 13 0.28
Unity Churches, Association of Other Christians Other Groups Family 1
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran Family 1
Evangelical Free Church of America Evangelical Protestant Methodist Family 2
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 1

Religious Traditions (1980 - 2020), Percent of Population

The population of this county was 46,460 in 2020. The adherent totals of the religious groups listed above (22,474) included 48.4% 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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