Oklahoma

Denominational Groups, 2000

1,432,064	453,030	2,982	168,625	39,775	1,354,178
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^†
Southern Baptist Convention	Evangelical Protestant	1,578	967,223	280.3
United Methodist Church, The	Mainline Protestant	636	322,794	93.6
Churches of Christ	Evangelical Protestant	603	83,047	24.1
Assemblies of God	Evangelical Protestant	490	88,301	25.6
National Association of Free Will Baptists	Evangelical Protestant	245	28,833	8.4
Church of the Nazarene	Evangelical Protestant	213	36,470	10.6
Catholic Church	Catholic	195	168,625	48.9
Christian Churches and Churches of Christ	Evangelical Protestant	193	42,708	12.4
Christian Church (Disciples of Christ)	Mainline Protestant	177	53,729	15.6
International Pentecostal Holiness Church	Evangelical Protestant	167	28,192	8.2
Presbyterian Church (U.S.A.)	Mainline Protestant	147	35,211	10.2
American Baptist Association, The	Evangelical Protestant	114	14,375	4.2
Pentecostal Church of God	Evangelical Protestant	96	7,164	2.1
Seventh-day Adventist Church	Evangelical Protestant	85	8,103	2.4
Lutheran Church--Missouri Synod	Evangelical Protestant	78	24,199	7.0
Church of Jesus Christ of Latter-day Saints, The	Other Theology	76	24,564	7.1
Church of God (Cleveland, Tennessee)	Evangelical Protestant	74	7,758	2.3
Episcopal Church	Mainline Protestant	72	19,335	5.6
Church of God (Anderson, Indiana)	Evangelical Protestant	62	7,952	2.3
Baptist Missionary Association of America	Evangelical Protestant	48	9,365	2.7
Church of God of Prophecy	Evangelical Protestant	38	1,375	0.4
Evangelical Lutheran Church in America	Mainline Protestant	37	11,105	3.2
Community of Christ	Evangelical Protestant	30	2,935	0.9
Primitive Baptist Churches--Old Line	Evangelical Protestant	25	n.a.	n.a.
Salvation Army, The	Evangelical Protestant	21	11,542	3.3
Friends (Quakers)	Mainline Protestant	20	1,418	0.4
International Church of the Foursquare Gospel	Evangelical Protestant	19	2,791	0.8
Cumberland Presbyterian Church	Evangelical Protestant	19	1,209	0.4
Independent, Charismatic Churches	Evangelical Protestant	18	28,170	8.2
Mennonite Church USA	Evangelical Protestant	16	1,689	0.5
United Church of Christ	Mainline Protestant	16	2,656	0.8
American Baptist Churches in the USA	Mainline Protestant	14	5,025	1.5
Wesleyan Church, The	Evangelical Protestant	14	4,203	1.2
Mennonite Brethren Churches, U.S. Conference of	Evangelical Protestant	13	3,051	0.9
Churches of God, General Conference	Evangelical Protestant	12	676	0.2
Bahá'í	Other Theology	11	1,715	0.5
Independent, Non-Charismatic Churches	Evangelical Protestant	11	7,570	2.2
Unitarian Universalist Association of Congregations	Other Theology	11	2,301	0.7
Free Methodist Church of North America	Evangelical Protestant	11	508	0.2
Muslim Estimate	Other Theology	10	6,145	1.8
Jewish Estimate	Other Theology	10	5,050	1.5
Christian Union	Evangelical Protestant	9	427	0.1
Buddhism	Other Theology	8	n.a.	n.a.
Vineyard USA	Evangelical Protestant	7	909	0.3
Evangelical Covenant Church, The	Evangelical Protestant	7	4,852	1.4
Church of the Brethren	Evangelical Protestant	6	498	0.1
Christian and Missionary Alliance, The	Evangelical Protestant	6	717	0.2
Evangelical Free Church of America, The	Evangelical Protestant	5	528	0.2
Reformed Baptist Churches	Evangelical Protestant	5	n.a.	n.a.
Mennonite; Other Groups	Evangelical Protestant	5	247	0.1
Presbyterian Church in America	Evangelical Protestant	5	971	0.3
Calvary Chapel Fellowship Churches	Evangelical Protestant	5	n.a.	n.a.
Old Order Amish Church	Evangelical Protestant	5	346	0.1
North American Baptist Conference	Evangelical Protestant	5	370	0.1
Church of God in Christ, Mennonite	Evangelical Protestant	4	551	0.2
Wisconsin Evangelical Lutheran Synod	Evangelical Protestant	3	597	0.2
Brethren In Christ Church	Evangelical Protestant	3	261	0.1
Reformed Church in America	Mainline Protestant	3	1,152	0.3
Association of Free Lutheran Congregations, The	Evangelical Protestant	3	300	0.1
Orthodox Presbyterian Church, The	Evangelical Protestant	3	139	0.0
Coptic Orthodox Church	Orthodox	2	n.a.	n.a.
Antiochian Orthodox Christian Archdiocese of North America, The	Orthodox	2	1,634	0.5
Hindu	Other Theology	2	n.a.	n.a.
Greek Orthodox Archdiocese of America	Orthodox	2	813	0.2
Universal Fellowship of Metropolitan Community Churches	Mainline Protestant	2	106	0.0
Fellowship of Evangelical Bible Churches	Evangelical Protestant	2	62	0.0
International Churches of Christ	Evangelical Protestant	2	365	0.1
Jain	Other Theology	2	n.a.	n.a.
Independent Free Will Baptists Associations	Evangelical Protestant	2	169	0.1
General Association of Regular Baptist Churches	Evangelical Protestant	1	62	0.0
Malankara Orthodox Syrian Church, American Diocese of the	Orthodox	1	125	0.0
National Association of Congregational Christian Churches	Mainline Protestant	1	37	0.0
Orthodox Church in America: Territorial Dioceses	Orthodox	1	19	0.0
Malankara Archdiocese of the Syrian Orthodox Church in North America	Orthodox	1	125	0.0
Russian Orthodox Church Outside of Russia	Orthodox	1	n.a.	n.a.
Sikh	Other Theology	1	n.a.	n.a.
Southwide Baptist Fellowship	Evangelical Protestant	1	n.a.	n.a.
Armenian Apostolic Church / Catholicossate of Cilicia	Orthodox	1	80	0.0
Ukrainian Orthodox Church of the USA	Orthodox	1	180	0.1
Beachy Amish Mennonite Churches	Evangelical Protestant	1	56	0.0
Holy Orthodox Church in North America	Orthodox	1	6	0.0
International Council of Community Churches	Mainline Protestant	1	462	0.1
Conservative Mennonite Conference	Evangelical Protestant	1	228	0.1
	*Totals (Unadjusted)^:**	5,854	2,096,476
	Total (Adjusted)^:**		2,457,087

The population of these 77 counties (or equivalents) in 1990 was 3,145,585; in 2000 it was 3,450,654. The total population changed 9.7%. The unadjusted adherent totals of the religious groups listed above (2,096,476) include 60.8% of the total population in 2000. The adjusted total adherents (2,457,087) include 71.2% of the population.

Source

^*The “Unadjusted Totals” come from the 1990 and 2000 data collected by representatives of the Association of Statisticians of American Religious Bodies (ASARB). While quite comprehensive, this data excludes most of the historically African-American denominations and some other major groups. As a result, these numbers will be an underestimate of the total adherence rate, particularly in areas with a large African-American population. The 2000 data included 149 religious groups and the final results are published in Religious Congregations and Membership in the United States 2000. Copyright © 2002, All rights reserved. The 1990 data included 132 groups and the final results are published in Churches and Church Membership in the United States 1990 Copyright © 1990, All rights reserved. Published by Glenmary Research Center, 1312 Fifth Ave., North, Nashville, TN 37208. www.glenmary.org/grc [More information on the data collection]

^**The “Adjusted Totals” include all adherents in the denominations counted by the Association of Statisticians of American Religious Bodies (ASARB) and estimates adherent totals for the historically African-American denominations and other religious groups not listed in the ASARB totals. An article by Roger Finke and Christopher P. Scheitle (2005) reviews how these estimates were computed.

^†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.

[More information on the data source]