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Sioux County, Iowa - County Membership Report (2000)

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
Reformed Church in America Mainline Protestant Presbyterian/Reformed Family 19 11,282 357.15
Christian Reformed Church in North America Evangelical Protestant Presbyterian/Reformed Family 16 9,140 289.34
Catholic Church Catholic Catholic Liturgical Family 5 2,461 77.91
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 6 1,663 52.64
Netherlands Reformed Congregations Evangelical Protestant Presbyterian/Reformed Family 2 1,585 50.18
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 4 1,366 43.24
United Methodist Church Mainline Protestant Methodist Family 3 588 18.61
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 4 545 17.25
Protestant Reformed Churches in America Evangelical Protestant Presbyterian/Reformed Family 1 495 15.67
Christian and Missionary Alliance Evangelical Protestant Holiness Family 1 424 13.42
United Reformed Churches in North America Evangelical Protestant Presbyterian/Reformed Family 1 294 9.31
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 1 279 8.83
Evangelical Free Church of America Evangelical Protestant Methodist Family 2 175 5.54
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 1 100 3.17
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 1 40 1.27
Southern Baptist Convention Evangelical Protestant Baptist Family 0 34 1.08
Baha'i Faith Other Other Groups Family 0 1 0.03

Religious Traditions (1980 - 2020), Percent of Population

The population of this county was 31,589 in 2000. The adherent totals of the religious groups listed above (30,472) included 96.5% of the total population in 2000. 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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