State Membership Report
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Iowa

Denominational Groups, 2000

346,243 775,045 2,865 558,092 29,181 1,214,898
Evangelical Protestant Mainline Protestant Orthodox Catholic Other Unclaimed

Congregational "adherents" include all full members, their children, and others who regularly attend services. The historically African American denominations are not included in the 2000 congregation and membership totals. Many are also missing in 1990 and most historically African American denominations are missing in the 1980 reports.
[More information on the data sources]

Reports


Religious Bodies Theology Congregations Adherents Adherence Rate
United Methodist Church, The Mainline Protestant 911 316,303 108.6
Catholic Church Catholic 589 539,482 185.2
Evangelical Lutheran Church in America Mainline Protestant 531 284,695 97.7
Presbyterian Church (U.S.A.) Mainline Protestant 325 105,086 36.1
Lutheran Church--Missouri Synod Evangelical Protestant 284 128,244 44.0
United Church of Christ Mainline Protestant 213 61,047 21.0
Christian Church (Disciples of Christ) Mainline Protestant 173 54,611 18.7
Christian Churches and Churches of Christ Evangelical Protestant 134 23,340 8.0
American Baptist Churches in the USA Mainline Protestant 132 35,219 12.1
Assemblies of God Evangelical Protestant 117 24,545 8.4
Church of the Nazarene Evangelical Protestant 73 14,296 4.9
Reformed Church in America Mainline Protestant 73 32,899 11.3
Churches of Christ Evangelical Protestant 71 4,899 1.7
Episcopal Church Mainline Protestant 67 17,833 6.1
Christian Reformed Church in North America Evangelical Protestant 59 21,186 7.3
Seventh-day Adventist Church Evangelical Protestant 55 5,509 1.9
Southern Baptist Convention Evangelical Protestant 54 10,496 3.6
Friends (Quakers) Mainline Protestant 48 6,424 2.2
Open Bible Standard Churches, Inc. Evangelical Protestant 40 7,336 2.5
Evangelical Free Church of America, The Evangelical Protestant 37 3,937 1.4
Christian Brethren Evangelical Protestant 36 2,390 0.8
Baptist General Conference Evangelical Protestant 31 5,665 1.9
Church of the Brethren Evangelical Protestant 31 4,402 1.5
Church of Jesus Christ of Latter-day Saints, The Other Theology 27 7,674 2.6
Free Methodist Church of North America Evangelical Protestant 23 3,147 1.1
International Church of the Foursquare Gospel Evangelical Protestant 20 2,518 0.9
Old Order Amish Church Evangelical Protestant 19 2,983 1.0
Evangelical Lutheran Synod Evangelical Protestant 19 2,236 0.8
Salvation Army, The Evangelical Protestant 18 15,580 5.4
Christian and Missionary Alliance, The Evangelical Protestant 17 2,349 0.8
Evangelical Covenant Church, The Evangelical Protestant 17 2,889 1.0
Conservative Baptist Association of America Evangelical Protestant 16 2,504 0.9
Church of God (Cleveland, Tennessee) Evangelical Protestant 15 761 0.3
North American Baptist Conference Evangelical Protestant 14 3,207 1.1
Jewish Estimate Other Theology 13 2,522 0.9
Church of God (Anderson, Indiana) Evangelical Protestant 10 1,488 0.5
Wisconsin Evangelical Lutheran Synod Evangelical Protestant 10 1,482 0.5
National Association of Congregational Christian Churches Mainline Protestant 10 3,771 1.3
Unitarian Universalist Association of Congregations Other Theology 9 1,648 0.6
Christian Union Evangelical Protestant 8 682 0.2
Missionary Church, The Evangelical Protestant 7 313 0.1
Church of the Lutheran Brethren of America Evangelical Protestant 5 454 0.2
Protestant Reformed Churches in America Evangelical Protestant 3 543 0.2
Advent Christian Church Evangelical Protestant 2 116 0.0
Conservative Congregational Christian Conference Evangelical Protestant 2 575 0.2
Church of God General Conference Evangelical Protestant 2 82 0.0
Universal Fellowship of Metropolitan Community Churches Mainline Protestant 2 120 0.0
Brethren In Christ Church Evangelical Protestant 2 172 0.1
Brethren Church, The (Ashland, Ohio) Evangelical Protestant 2 280 0.1
Primitive Methodist Church in the USA Evangelical Protestant 2 113 0.0
Beachy Amish Mennonite Churches Evangelical Protestant 2 217 0.1
Presbyterian Church in America Evangelical Protestant 1 76 0.0
African Methodist Episcopal Zion Church Evangelical Protestant 1 269 0.1
Church of God (Seventh Day) Evangelical Protestant 1 49 0.0
Orthodox Presbyterian Church, The Evangelical Protestant 1 61 0.0
Association of Free Lutheran Congregations, The Evangelical Protestant 1 203 0.1
Latvian Evangelical Lutheran Church in America Mainline Protestant 1 114 0.0
Totals (Unadjusted)*: 4,386 1,771,042  

The population of these counties (or equivalent) in 1980 was 2,913,808. The adherent totals of the religious groups listed above (1,771,042) include 60.8% of the total population in 1980.

Source

The 1980 data were collected by the Glenmary Research Center and includes statistics for 111 Judeo-Christian church bodies, including number of churches and adherents. These data originally appeared in Churches and Church Membership in the United States, 1980, published by the Glenmary Research Center.

The adherence rate provides the number of adherents of a particular group per 1,000 population. For example, in 2000 the Episcopal Church had an adherence rate of approximately 8 (8.1) in Autauga County, Alabama. This means that 8 out of every 1,000 people in Autauga County are Episcopalian.