County Membership Report
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Contra Costa County, California

Denominational Groups, 2000

74,449 40,234 2,035 204,070 48,191 579,837
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
American Baptist Association, The Evangelical Protestant 6 825 0.9
American Baptist Churches in the USA Mainline Protestant 19 4,052 4.3
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox 2 530 0.6
Assemblies of God Evangelical Protestant 22 8,036 8.5
Bahá'í Other Theology 15 653 0.7
Baptist General Conference Evangelical Protestant 5 24,803 26.1
Buddhism Other Theology 7 n.a. n.a.
Calvary Chapel Fellowship Churches Evangelical Protestant 2 n.a. n.a.
Catholic Church Catholic 34 204,070 215.1
Christian and Missionary Alliance, The Evangelical Protestant 7 1,468 1.6
Christian Church (Disciples of Christ) Mainline Protestant 4 1,008 1.1
Christian Churches and Churches of Christ Evangelical Protestant 4 775 0.8
Christian Reformed Church in North America Evangelical Protestant 2 312 0.3
Church of God (Anderson, Indiana) Evangelical Protestant 3 155 0.2
Church of God (Cleveland, Tennessee) Evangelical Protestant 6 713 0.8
Church of God of Prophecy Evangelical Protestant 4 200 0.2
Church of Jesus Christ of Latter-day Saints, The Other Theology 46 18,562 19.6
Church of the Nazarene Evangelical Protestant 7 1,852 2.0
Churches of Christ Evangelical Protestant 21 2,806 3.0
Community of Christ Evangelical Protestant 1 181 0.2
Conservative Baptist Association of America Evangelical Protestant 7 1,250 1.3
Episcopal Church Mainline Protestant 17 6,505 6.9
Evangelical Covenant Church, The Evangelical Protestant 7 2,302 2.4
Evangelical Free Church of America, The Evangelical Protestant 5 1,349 1.4
Evangelical Lutheran Church in America Mainline Protestant 15 6,652 7.0
Evangelical Presbyterian Church Evangelical Protestant 2 894 0.9
Free Methodist Church of North America Evangelical Protestant 3 272 0.3
Friends (Quakers) Mainline Protestant 1 192 0.2
General Association of Regular Baptist Churches Evangelical Protestant 8 1,458 1.5
Greek Orthodox Archdiocese of America Orthodox 2 453 0.5
Greek Orthodox Archdiocese of Vasiloupulis Orthodox 1 117 0.1
Hindu Other Theology 7 n.a. n.a.
Independent, Non-Charismatic Churches Evangelical Protestant 2 1,831 1.9
International Church of the Foursquare Gospel Evangelical Protestant 9 2,235 2.4
International Pentecostal Holiness Church Evangelical Protestant 5 410 0.4
Jewish Estimate Other Theology 15 22,000 23.2
Lutheran Church--Missouri Synod Evangelical Protestant 14 3,374 3.6
Muslim Estimate Other Theology 6 6,503 6.9
National Association of Congregational Christian Churches Mainline Protestant 1 45 0.1
National Association of Free Will Baptists Evangelical Protestant 4 243 0.3
New Testament Association of Independent Baptist Churches and other Fundamental Baptist Associations/Fellowships Evangelical Protestant 8 1,780 1.9
Orthodox Church in America: Bulgarian Diocese Orthodox 2 348 0.4
Orthodox Church in America: Territorial Dioceses Orthodox 1 237 0.3
Orthodox Presbyterian Church, The Evangelical Protestant 1 177 0.2
Pentecostal Church of God Evangelical Protestant 9 2,447 2.6
Presbyterian Church (U.S.A.) Mainline Protestant 15 11,799 12.4
Presbyterian Church in America Evangelical Protestant 2 340 0.4
Salvation Army, The Evangelical Protestant 3 475 0.5
Serbian Orthodox Church in the USA Orthodox 1 350 0.4
Seventh-day Adventist Church Evangelical Protestant 7 2,743 2.9
Sikh Other Theology 2 n.a. n.a.
Southern Baptist Convention Evangelical Protestant 40 7,779 8.2
Unitarian Universalist Association of Congregations Other Theology 1 473 0.5
United Church of Christ Mainline Protestant 9 2,500 2.6
United Methodist Church, The Mainline Protestant 21 7,468 7.9
United Reformed Churches in North America Evangelical Protestant 1 108 0.1
Universal Fellowship of Metropolitan Community Churches Mainline Protestant 1 13 0.0
Vineyard USA Evangelical Protestant 2 514 0.5
Wesleyan Church, The Evangelical Protestant 2 250 0.3
Wisconsin Evangelical Lutheran Synod Evangelical Protestant 1 92 0.1
Totals (Unadjusted)*: 477 368,979  
Total (Adjusted)**:   440,701  

The population of this county (or equivalent) in 1990 was 803,732; in 2000 it was 948,816. The total population changed 18.1%. The unadjusted adherent totals of the religious groups listed above (368,979) include 38.9% of the total population in 2000. The adjusted total adherents (440,701) include 46.4% 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]