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.
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Reports


Religious Bodies Theology Congregations Adherents % Change
American Baptist Churches in the USA Mainline Protestant -11 -6,529 -20.3%
Apostolic Christian Church of America, Inc. Evangelical Protestant 0 +673 46.6%
Assemblies of God Evangelical Protestant +6 +6,376 29.5%
Association of Free Lutheran Congregations, The Evangelical Protestant +3 +162 29.0%
Baptist General Conference Evangelical Protestant -3 +428 7.1%
Beachy Amish Mennonite Churches Evangelical Protestant 0 -35 -14.4%
Brethren Church, The (Ashland, Ohio) Evangelical Protestant 0 -125 -56.1%
Brethren In Christ Church Evangelical Protestant -1 -39 -57.4%
Catholic Church Catholic -56 +37,770 7.3%
Christian and Missionary Alliance, The Evangelical Protestant -4 +823 21.3%
Christian Church (Disciples of Christ) Mainline Protestant -21 +4,386 8.6%
Christian Churches and Churches of Christ Evangelical Protestant +5 +1,254 5.2%
Christian Reformed Church in North America Evangelical Protestant -5 +596 2.8%
Church of God (Anderson, Indiana) Evangelical Protestant -1 -337 -50.3%
Church of God (Cleveland, Tennessee) Evangelical Protestant +2 -118 -8.8%
Church of God General Conference Evangelical Protestant 0 +19 18.6%
Church of God of Prophecy Evangelical Protestant -2 +93 28.4%
Church of Jesus Christ of Latter-day Saints, The Other Theology +25 +4,853 46.7%
Church of the Brethren Evangelical Protestant -4 -176 -4.9%
Church of the Nazarene Evangelical Protestant -2 -1,923 -14.9%
Churches of Christ Evangelical Protestant -2 +223 5.6%
Churches of God, General Conference Evangelical Protestant -3 -207 -31.5%
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant -3 +33 6.2%
Conservative Baptist Association of America Evangelical Protestant -5 n.a. n.a.
Conservative Congregational Christian Conference Evangelical Protestant +3 +352 64.4%
Cumberland Presbyterian Church Evangelical Protestant 0 +10 8.1%
Episcopal Church Mainline Protestant -3 -1,468 -10.3%
Evangelical Free Church of America, The Evangelical Protestant +28 +5,031 62.5%
Evangelical Lutheran Church in America Mainline Protestant -9 +3,120 1.2%
Evangelical Presbyterian Church Evangelical Protestant 0 +217 103.8%
Free Methodist Church of North America Evangelical Protestant -3 -354 -33.0%
Friends (Quakers) Mainline Protestant +10 -1,598 -25.6%
Greek Orthodox Archdiocese of America Orthodox 0 n.a. n.a.
Independent, Charismatic Churches Evangelical Protestant +2 -520 -9.4%
Independent, Non-Charismatic Churches Evangelical Protestant -1 +3,585 47.6%
International Church of the Foursquare Gospel Evangelical Protestant 0 +1,392 42.7%
Jewish Estimate Other Theology -4 -301 -4.5%
Lutheran Church--Missouri Synod Evangelical Protestant +1 -3,946 -3.2%
Mennonite Church USA Evangelical Protestant -11 -1,378 -26.0%
Missionary Church, The Evangelical Protestant -3 +16 4.3%
National Association of Congregational Christian Churches Mainline Protestant 0 -296 -12.0%
National Association of Free Will Baptists Evangelical Protestant +1 -102 n.a.
Netherlands Reformed Congregations Evangelical Protestant 0 +60 3.9%
North American Baptist Conference Evangelical Protestant 0 -478 -17.2%
Old Order Amish Church Evangelical Protestant +15 -849 -24.6%
Old Order River Brethren Evangelical Protestant 0 -1 -1.6%
Pentecostal Church of God Evangelical Protestant 0 +236 49.4%
Presbyterian Church (U.S.A.) Mainline Protestant -5 -15,212 -17.9%
Presbyterian Church in America Evangelical Protestant +2 +375 48.8%
Primitive Methodist Church in the USA Evangelical Protestant 0 +97 404.2%
Reformed Church in America Mainline Protestant +4 +3,372 10.1%
Reformed Church in the United States Evangelical Protestant 0 -39 -19.9%
Salvation Army, The Evangelical Protestant -2 +6,436 230.4%
Seventh-day Adventist Church Evangelical Protestant -8 -950 -17.5%
Southern Baptist Convention Evangelical Protestant +15 -638 -4.6%
Unitarian Universalist Association of Congregations Other Theology 0 -341 -15.8%
United Church of Christ Mainline Protestant -14 -10,245 -17.2%
United Methodist Church, The Mainline Protestant -25 -23,887 -8.8%
Wesleyan Church, The Evangelical Protestant +3 +337 6.0%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant +1 +160 10.0%
  Totals: -85 +10,393 +.6%

The population of these 99 counties (or equivalents) in 1990 was 2,776,755; in 2000 it was 2,926,324. The total population changed 5.4%. The adherent totals for 1990 (1,681,062) represent 60.5% of the 1990 population. The adherent totals for 2000 (1,711,426) include 58.5% of the 2000 population. There is sufficient data for 58 groups to calculate 1990-2000 change. These 58 groups had 1,659,196 adherents in 1990 and 1,669,589 adherents in 2000, for a change of .6%

Sources

The 2000 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and includes statistics for 149 religious groups, including number of churches and adherents. Dale E. Jones, Sherri Doty, Clifford Grammich, James E. Horsch, Richard Houseal, Mac Lynn, John P. Marcum, Kenneth M. Sanchagrin and Richard H. Taylor supervised the collection. These data originally appeared in Religious Congregations & Membership in the United States, 2000, published by the Glenmary Research Center.

The 1990 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include statistics for 132 religious groups, including number of churches and adherents. Martin B. Bradley, Norman M. Green, Jr., Dale E. Jones, Mac Lynn, and Lou McNeil supervised the collection. These data originally appeared in Churches and Church Membership in the United States, 1990, published by the Glenmary Research Center.

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