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Religious Traditions, 2010

1,531,381 51,621 383,786 178,430 2,699 78,462 1,524,972
Evangelical Protestant Black Protestant Mainline Protestant Catholic Orthodox Other Unclaimed

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]


Religious Bodies Tradition Family Congregations Adherents % Change
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist 0 -1073 -58.9%
American Baptist Association, The Evangelical Protestant Baptist -15 -1476 -11.5%
American Baptist Churches in the USA Mainline Protestant Baptist +3 +3796 +205.9%
Assemblies of God Evangelical Protestant Pentecostal +26 +16237 +23.3%
Association of Free Lutheran Congregations Evangelical Protestant Lutheran --- --- ---
Beachy Amish Mennonite Churches* Evangelical Protestant European Free-Church 0 -5 -7.9%
Brethren In Christ Church Evangelical Protestant European Free-Church -1 --- ---
Catholic Church Catholic Catholicism -6 +69233 +63.4%
Christian and Missionary Alliance, The Evangelical Protestant Holiness +4 +827 +270.3%
Christian Brethren Evangelical Protestant Ind. Fundamentalist -2 --- ---
Christian Church (Disciples of Christ) Mainline Protestant Baptist -36 -22496 -33.9%
Christian Churches and Churches of Christ Evangelical Protestant Baptist -6 -6088 -14.5%
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist -15 -3470 -43.8%
Christian Union Evangelical Protestant Other Groups 0 --- ---
Church of God (Anderson, Indiana) Evangelical Protestant Holiness -39 -9022 -56%
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal -5 +1956 +36.5%
Church of God (Seventh Day) Evangelical Protestant Adventist -3 --- ---
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church +2 +138 +27.3%
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints +32 +29151 +210%
Church of the Brethren Evangelical Protestant European Free-Church -3 -119 -21.8%
Church of the Nazarene Evangelical Protestant Holiness -44 -665 -1.8%
Churches of Christ Evangelical Protestant Baptist -55 -14111 -15.4%
Cumberland Presbyterian Church Evangelical Protestant Presbyterian-Reformed -7 -1006 -54%
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism -8 -6275 -28.2%
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist --- --- ---
Evangelical Lutheran Church in America Mainline Protestant Lutheran 0 -3065 -32.3%
Evangelical Methodist Church Evangelical Protestant Methodist/Pietist +1 --- ---
Fellowship of Evangelical Bible Churches Evangelical Protestant European Free-Church +2 +25 +18.7%
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal +8 +453 +32.9%
Free Methodist Church of North America Evangelical Protestant Holiness +34 +1064 +44.3%
International Pentecostal Holiness Church Evangelical Protestant Pentecostal -33 +5228 +35%
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran +9 -284 -1.3%
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups -1 -286 -86.7%
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed -1 -530 -93.3%
North American Baptist Conference Evangelical Protestant Baptist 0 -201 -33.8%
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 0 -30 -21.7%
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed -32 -22790 -47.4%
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed +5 +937 +221%
Reformed Church in America Mainline Protestant Presbyterian-Reformed 0 -278 -25.5%
Salvation Army Evangelical Protestant Holiness -1 +1059 +24.7%
Seventh-day Adventist Church Evangelical Protestant Adventist +9 +3171 +41%
Southern Baptist Convention Evangelical Protestant Baptist +407 +87037 +10.9%
U.S. Mennonite Brethren Evangelical Protestant European Free-Church -2 +291 +9.1%
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 0 -45 -37.5%
Unitarian Universalist Association of Congregations Other Liberal +4 +1604 +80.2%
United Church of Christ Mainline Protestant Presbyterian-Reformed -1 +1394 +81%
United Methodist Church, The Mainline Protestant Methodist/Pietist -100 -31119 -9.9%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran +1 +49 +9.7%
Totals: +131 +99216 +5.7%

The population of Oklahoma was 3,025,290 in 1980. The adherent totals of the religious groups listed above (1,754,071) included 58.0% of the total population in 1980.

The population of Oklahoma was 3,751,351 in 2010; in 2000 it was 3,450,654. The total population changed 8.7%. The adherent totals of the religious groups listed above (2,226,379) included 59.3% of the total population in 2010.

* 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 for those who are interested in these trends.


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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