State Membership Report
Iowa
Religious Traditions, 2010
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Congregational adherents include all full members, their children, and others who regularly attend services. The 2010 reports contain incomplete counts of congregations and adherents belonging to the eight largest historically African-American denominations. These denominations are not included in the 2000 reports and are largely missing from the 1990 and 1980 reports.
[More information on the data sources]
Reports
|
Religious Bodies |
Tradition |
Family |
Congregations |
Adherents |
Adherence Rate† |
Catholic Church |
Catholic |
Catholicism |
564 |
520,322 |
187.4 |
United Methodist Church, The |
Mainline Protestant |
Methodist/Pietist |
887 |
272,098 |
98.0 |
Evangelical Lutheran Church in America |
Mainline Protestant |
Lutheran |
519 |
265,423 |
95.6 |
Lutheran Church--Missouri Synod |
Evangelical Protestant |
Lutheran |
293 |
124,021 |
44.7 |
Presbyterian Church (U.S.A.) |
Mainline Protestant |
Presbyterian-Reformed |
311 |
85,186 |
30.7 |
United Church of Christ |
Mainline Protestant |
Presbyterian-Reformed |
209 |
59,450 |
21.4 |
Christian Church (Disciples of Christ) |
Mainline Protestant |
Restoration Movement |
167 |
50,771 |
18.3 |
Reformed Church in America |
Mainline Protestant |
Presbyterian-Reformed |
74 |
33,337 |
12.0 |
American Baptist Churches in the USA |
Mainline Protestant |
Baptist |
124 |
32,175 |
11.6 |
Christian Churches and Churches of Christ |
Evangelical Protestant |
Restoration Movement |
123 |
24,137 |
8.7 |
Assemblies of God |
Evangelical Protestant |
Pentecostal |
131 |
21,650 |
7.8 |
Christian Reformed Church in North America |
Evangelical Protestant |
Presbyterian-Reformed |
62 |
21,129 |
7.6 |
Episcopal Church |
Mainline Protestant |
Episcopalianism/Anglicanism |
67 |
14,198 |
5.1 |
Black Baptists Estimate |
Evangelical Protestant |
Baptist |
--- |
14,188 |
5.1 |
Southern Baptist Convention |
Evangelical Protestant |
Baptist |
60 |
13,960 |
5.0 |
Church of the Nazarene |
Evangelical Protestant |
Holiness |
72 |
12,934 |
4.7 |
Church of Jesus Christ of Latter-day Saints, The |
Other |
Latter-day Saints |
37 |
10,383 |
3.7 |
Evangelical Free Church of America, The |
Evangelical Protestant |
Methodist/Pietist |
51 |
8,056 |
2.9 |
Independent, Non-Charismatic Churches |
Evangelical Protestant |
---- |
14 |
7,525 |
2.7 |
Jewish |
Other |
Judaism |
20 |
6,701 |
2.4 |
Friends (Quakers) |
Mainline Protestant |
European Free-Church |
51 |
6,235 |
2.2 |
Converge Worldwide/Baptist General Conference |
Evangelical Protestant |
Baptist |
34 |
6,005 |
2.2 |
Wesleyan Church, The |
Evangelical Protestant |
Holiness |
25 |
5,615 |
2.0 |
Independent, Charismatic Churches |
Evangelical Protestant |
Pentecostal |
4 |
5,520 |
2.0 |
Seventh-day Adventist Church |
Evangelical Protestant |
Adventist |
55 |
5,426 |
2.0 |
Mennonite Church USA |
Evangelical Protestant |
European Free-Church |
33 |
5,304 |
1.9 |
Churches of Christ |
Evangelical Protestant |
Restoration Movement |
73 |
4,006 |
1.4 |
Christian and Missionary Alliance, The |
Evangelical Protestant |
Holiness |
28 |
3,871 |
1.4 |
Church of the Brethren |
Evangelical Protestant |
European Free-Church |
31 |
3,599 |
1.3 |
Old Order Amish |
Evangelical Protestant |
European Free-Church |
23 |
3,450 |
1.2 |
Foursquare Gospel, International Church of the |
Evangelical Protestant |
Pentecostal |
28 |
3,262 |
1.2 |
Christian Brethren |
Evangelical Protestant |
Ind. Fundamentalist |
37 |
2,968 |
1.1 |
Salvation Army |
Evangelical Protestant |
Holiness |
21 |
2,794 |
1.0 |
North American Baptist Conference |
Evangelical Protestant |
Baptist |
14 |
2,782 |
1.0 |
National Association of Congregational Christian Churches |
Mainline Protestant |
Presbyterian-Reformed |
12 |
2,473 |
0.9 |
Unitarian Universalist Association of Congregations |
Other |
Liberal |
11 |
2,157 |
0.8 |
American Association of Lutheran Churches |
Evangelical Protestant |
Lutheran |
9 |
1,810 |
0.7 |
Evangelical Lutheran Synod |
Evangelical Protestant |
Lutheran |
19 |
1,795 |
0.6 |
Wisconsin Evangelical Lutheran Synod |
Evangelical Protestant |
Lutheran |
11 |
1,596 |
0.6 |
Netherlands Reformed Congregations |
Evangelical Protestant |
Presbyterian-Reformed |
2 |
1,525 |
0.5 |
Apostolic Christian Church of America, Inc. |
Evangelical Protestant |
European Free-Church |
8 |
1,443 |
0.5 |
Church of God (Cleveland, Tennessee) |
Evangelical Protestant |
Pentecostal |
16 |
1,335 |
0.5 |
Free Methodist Church of North America |
Evangelical Protestant |
Holiness |
21 |
1,073 |
0.4 |
Presbyterian Church in America |
Evangelical Protestant |
Presbyterian-Reformed |
6 |
768 |
0.3 |
Church of God (Anderson, Indiana) |
Evangelical Protestant |
Holiness |
11 |
670 |
0.2 |
Churches of God, General Conference |
Evangelical Protestant |
Presbyterian-Reformed |
10 |
658 |
0.2 |
Association of Free Lutheran Congregations |
Evangelical Protestant |
Lutheran |
4 |
559 |
0.2 |
Conservative Congregational Christian Conference |
Evangelical Protestant |
Presbyterian-Reformed |
2 |
547 |
0.2 |
Congregational Christian Churches, Additional (not part of any national CCC body) |
Mainline Protestant |
Presbyterian-Reformed |
8 |
530 |
0.2 |
Church of the Lutheran Brethren of America |
Evangelical Protestant |
Lutheran |
6 |
483 |
0.2 |
Pentecostal Church of God |
Evangelical Protestant |
Pentecostal |
6 |
478 |
0.2 |
Missionary Church, The |
Evangelical Protestant |
Holiness |
7 |
376 |
0.1 |
Church of God of Prophecy |
Evangelical Protestant |
Pentecostal |
12 |
328 |
0.1 |
African Methodist Episcopal Zion Church |
Black Protestant |
Methodist/Pietist |
1 |
269 |
0.1 |
Beachy Amish Mennonite Churches* |
Evangelical Protestant |
European Free-Church |
2 |
243 |
0.1 |
Brethren Church, The (Ashland, Ohio) |
Evangelical Protestant |
European Free-Church |
1 |
223 |
0.1 |
Evangelical Presbyterian Church |
Evangelical Protestant |
Presbyterian-Reformed |
1 |
209 |
0.1 |
Reformed Church in the United States |
Evangelical Protestant |
Presbyterian-Reformed |
1 |
196 |
0.1 |
Cumberland Presbyterian Church |
Evangelical Protestant |
Presbyterian-Reformed |
1 |
124 |
0.0 |
Advent Christian Church |
Evangelical Protestant |
Adventist |
2 |
113 |
0.0 |
Church of God General Conference |
Evangelical Protestant |
Adventist |
4 |
102 |
0.0 |
National Association of Free Will Baptists |
Evangelical Protestant |
Baptist |
1 |
102 |
0.0 |
Church of the United Brethren in Christ |
Evangelical Protestant |
Methodist/Pietist |
4 |
82 |
0.0 |
Latvian Evangelical Lutheran Church in America |
Mainline Protestant |
Lutheran |
1 |
75 |
0.0 |
Church of God (Seventh Day) |
Evangelical Protestant |
Adventist |
1 |
73 |
0.0 |
Brethren In Christ Church |
Evangelical Protestant |
European Free-Church |
2 |
68 |
0.0 |
Old Order River Brethren |
Evangelical Protestant |
European Free-Church |
1 |
64 |
0.0 |
Primitive Methodist Church in the USA |
Evangelical Protestant |
Methodist/Pietist |
2 |
24 |
0.0 |
Evangelical Methodist Church |
Evangelical Protestant |
Methodist/Pietist |
1 |
10 |
0.0 |
Armenian Apostolic Church of America (Catholicosate of Cilicia) |
Orthodox |
Eastern Liturgical (Orthodox) |
--- |
--- |
--- |
Church of Christ, Scientist |
Other |
Christian Science |
24 |
--- |
--- |
Church of God in Christ, Mennonite |
Evangelical Protestant |
European Free-Church |
--- |
--- |
--- |
Conservative Baptist Association of America |
Evangelical Protestant |
Baptist |
17 |
--- |
--- |
Greek Orthodox Archdiocese of America |
Orthodox |
Eastern Liturgical (Orthodox) |
6 |
--- |
--- |
Independent Fundamental Churches of America |
Evangelical Protestant |
Ind. Fundamentalist |
17 |
--- |
--- |
International Pentecostal Holiness Church |
Evangelical Protestant |
Pentecostal |
--- |
--- |
--- |
Open Bible Standard Churches, Inc. |
Evangelical Protestant |
Pentecostal |
47 |
--- |
--- |
|
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Totals:
| 4,560 |
1,681,062 |
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The population of Iowa was 2,776,755 in 1990; in 1980 it was 2,904,733. The total population changed -4.4%. The adherent totals of the religious groups listed above (1,681,062) included 60.5% of the total population in 1990.
*
In an effort to better match the ASARB standards for adherents, a few religious bodies changed the way their adherents were reported in 2010, including the Catholic Church, Amish groups, Friends groups, Jewish groups, the Church of Jesus Christ of Latter-day Saints, Non-denominational Christian Churches, and the United Methodist Church. This change does not affect any of the data in the newly released 2010 U.S. Religion Census: Religious Congregations & Membership Study. In fact, the data for these groups are now more comparable to that of other bodies than it was in previous decadal reports.
However, the change in methodology can distort assessments on growth or decline between 2000 and 2010 for each of these groups. County-level 2000 data using the new methodology are not readily available. ASARB staff has adjusted some 2000 county-level adherent statistics to allow for a more accurate picture on growth or decline. The revised maps and charts are now available on-line at www.usreligioncensus.org for those who are interested in these trends.
Source
2010 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include statistics for 236 religious groups, providing information on the number of their congregations and adherents within each state and county in the United States. Clifford Grammich, Kirk Hadaway, Richard Houseal, Dale E. Jones, Alexei Krindatch, Richie Stanley and Richard H. Taylor supervised the collection. These data originally appeared in 2010 U.S. Religion Census: Religious Congregations & Membership Study, published by the Association of Statisticians of American Religious Bodies (ASARB). [More information on the data collection]
†The adherence rate provides the number of adherents of a particular group per 1,000 population. For example, in 2010 the Episcopal Church had an adherence rate of 7.6 in Autauga County, Alabama. This means that about 8 out of every 1,000 people in Autauga County were Episcopalian.
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