Democratizing access to the best data on religion since 1997

Report Options

Report Year(s)

Add/Change Metro Areas:

Scroll to Report Section:

Main Report
Over Time Chart

Search Membership Reports

Ottumwa, IA Micro Area - Metro Area 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
Catholic Church Catholic Catholic Liturgical Family 2 2,715 76.61
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 7 2,500 70.55
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 6 885 24.97
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 3 396 11.17
United Methodist Church Mainline Protestant Methodist Family 5 386 10.89
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 3 380 10.72
Christian and Missionary Alliance Evangelical Protestant Holiness Family 1 340 9.59
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 1 334 9.43
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 2 298 8.41
Church of the Nazarene Evangelical Protestant Holiness Family 2 239 6.74
Open Bible Churches Evangelical Protestant Pentecostal Family 3 230 6.49
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran Family 1 200 5.64
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 1 176 4.97
National Baptist Convention, USA, Inc. Black Protestant Baptist Family 1 150 4.23
Church of God (Anderson, Indiana) Evangelical Protestant Holiness Family 1 144 4.06
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 3 129 3.64
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 2 123 3.47
Church of God in Christ Black Protestant Pentecostal Family 1 120 3.39
Southern Baptist Convention Evangelical Protestant Baptist Family 2 116 3.27
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 1 111 3.13
International Church of the Foursquare Gospel Evangelical Protestant Pentecostal Family 2 104 2.93
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 1 84 2.37
Free Methodist Church – USA Evangelical Protestant Holiness Family 1 68 1.92
Church of the Brethren Evangelical Protestant Friends/Brethren Family 1 62 1.75
Seventh-day Adventist Church Evangelical Protestant Adventist Family 1 44 1.24
Episcopal Church Mainline Protestant Anglican/Episcopal Family 1 34 0.96
Baha'i Faith Other Other Groups Family 0 12 0.34
Salvation Army Evangelical Protestant Holiness Family 1 0 0.00
Church of God of Prophecy Evangelical Protestant Pentecostal Family 1
Pentecostal Church of God Evangelical Protestant Pentecostal Family 1
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 1
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 1
United Pentecostal Church International Evangelical Protestant Pentecostal Family 1

Religious Traditions (1980 - 2020), Percent of Population

The population of this metro area was 35,437 in 2020. The adherent totals of the religious groups listed above (10,380) included 29.3% 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]

Our Sponsors

Our Affiliates

© 2024 The Association of Religion Data Archives. All rights reserved.