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Iowa 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
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 7 2,850 171.05
Catholic Church Catholic Catholic Liturgical Family 4 2,020 121.23
United Methodist Church Mainline Protestant Methodist Family 6 1,540 92.43
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 2 415 24.91
Amana Church Society Evangelical Protestant Communal Family 1 321 19.27
Hindu Yoga and Meditation Hinduism 1 275 16.50
Mennonite Church, USA Evangelical Protestant Mennonite/Amish Family 1 247 14.82
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 2 240 14.40
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 1 173 10.38
Conservative Mennonite Conference Evangelical Protestant Mennonite/Amish Family 1 159 9.54
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 1 103 6.18
Church of God General Conference (Abrahamic Faith, McDonough, GA) Evangelical Protestant Adventist Family 1 37 2.22
Church of the Nazarene Evangelical Protestant Holiness Family 1 8 0.48
Swedenborgian Church Other Christians Spiritualist Family 1 6 0.36
Baha'i Faith Other Other Groups Family 0 3 0.18
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 1 0 0.00
Fellowship of Grace Brethren Churches Mainline Protestant Friends/Brethren Family 2
North American Baptist Conference Evangelical Protestant Baptist Family 1
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 1

Religious Traditions (1980 - 2020), Percent of Population

The population of this county was 16,662 in 2020. The adherent totals of the religious groups listed above (8,397) included 50.4% 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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