County Membership Report
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King County, Washington

Denominational Groups, 2000

152,955 123,154 4,736 280,568 85,809 1,089,812
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 % Change
Church of Jesus Christ of Latter-day Saints, The Other Theology +54 +14,854 58.0%
International Church of the Foursquare Gospel Evangelical Protestant +30 +8,751 2743.0%
Assemblies of God Evangelical Protestant +21 +10,980 82.0%
Jewish Estimate Other Theology +17 +27,350 542.0%
Christian and Missionary Alliance, The Evangelical Protestant +13 +3,823 162.0%
Seventh-day Adventist Church Evangelical Protestant +11 +2,383 47.0%
Churches of Christ Evangelical Protestant +10 +715 20.0%
Southern Baptist Convention Evangelical Protestant +10 +2,059 21.0%
Independent, Charismatic Churches Evangelical Protestant +8 +17,560 n.a.
Independent, Non-Charismatic Churches Evangelical Protestant +7 +13,190 n.a.
Presbyterian Church (U.S.A.) Mainline Protestant +5 +2,222 9.0%
Friends (Quakers) Mainline Protestant +5 -176 -24.0%
Catholic Church Catholic +5 +158,954 131.0%
Baptist General Conference Evangelical Protestant +5 +1,754 57.0%
Conservative Baptist Association of America Evangelical Protestant +4 +3,371 263.0%
Episcopal Church Mainline Protestant +4 -3,497 -16.0%
Evangelical Covenant Church, The Evangelical Protestant +4 +2,179 85.0%
Greek Orthodox Archdiocese of America Orthodox +3 +2,379 n.a.
Lutheran Church--Missouri Synod Evangelical Protestant +3 -1,770 -14.0%
Christian Reformed Church in North America Evangelical Protestant +3 +160 17.0%
United Methodist Church, The Mainline Protestant +3 -5,424 -23.0%
Church of the Nazarene Evangelical Protestant +3 +3,355 82.0%
Church of God of Prophecy Evangelical Protestant +2 +74 n.a.
Evangelical Presbyterian Church Evangelical Protestant +2 +806 n.a.
Wisconsin Evangelical Lutheran Synod Evangelical Protestant +2 +259 32.0%
Mennonite Brethren Churches, U.S. Conference of Evangelical Protestant +2 +278 713.0%
Unitarian Universalist Association of Congregations Other Theology +2 +1,347 108.0%
Salvation Army, The Evangelical Protestant +2 +443 23.0%
Orthodox Church in America: Territorial Dioceses Orthodox +2 +496 n.a.
Pentecostal Church of God Evangelical Protestant +2 +80 n.a.
Reformed Church in America Mainline Protestant +1 -266 -43.0%
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox +1 +280 n.a.
Wesleyan Church, The Evangelical Protestant +1 +42 n.a.
Association of Free Lutheran Congregations, The Evangelical Protestant +1 -2 -1.0%
Christian Churches and Churches of Christ Evangelical Protestant +1 +3,561 67.0%
Church of God General Conference Evangelical Protestant +1 +15 n.a.
National Association of Free Will Baptists Evangelical Protestant +1 +84 n.a.
Presbyterian Church in America Evangelical Protestant +1 -92 -9.0%
Evangelical Free Church of America, The Evangelical Protestant +1 +569 97.0%
National Association of Congregational Christian Churches Mainline Protestant 0 -39 -43.0%
International Pentecostal Holiness Church Evangelical Protestant 0 +19 28.0%
Church of the Brethren Evangelical Protestant 0 -33 -6.0%
American Baptist Churches in the USA Mainline Protestant 0 -911 -7.0%
American Baptist Association, The Evangelical Protestant 0 +44 138.0%
North American Baptist Conference Evangelical Protestant 0 -222 -60.0%
Church of God (Cleveland, Tennessee) Evangelical Protestant 0 +138 54.0%
Universal Fellowship of Metropolitan Community Churches Mainline Protestant 0 -241 -80.0%
Evangelical Lutheran Church in America Mainline Protestant -1 -6,328 -15.0%
Christian Church (Disciples of Christ) Mainline Protestant -1 -1,457 -35.0%
United Church of Christ Mainline Protestant -1 -1,537 -17.0%
Free Methodist Church of North America Evangelical Protestant -2 -3,019 -51.0%
Church of God (Anderson, Indiana) Evangelical Protestant -3 -1,000 -57.0%
  Totals: +245 +258,560 +69.5%

The population of this county (or equivalent) in 1980 was 1,269,749; in 2000 it was 1,737,034. The total population changed 15.2%. The adherent totals for 1980 (376,568) represent 29.7% of the 1980 population. The adherent totals for 2000 (647,222) include 37.3% of the 2000 population. The totals represent the change in groups that reported in both 1980 and 2000 only. There is sufficient data for 52 groups to calculate 1980-2000 change. These 52 groups had 372,287 adherents in 1980 and 630,847 adherents in 2000, for a change of 69.5%

Sources

The 2000 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and includes statistics for 149 religious groups, including number of churches and adherents. Dale E. Jones, Sherri Doty, Clifford Grammich, James E. Horsch, Richard Houseal, Mac Lynn, John P. Marcum, Kenneth M. Sanchagrin and Richard H. Taylor supervised the collection. These data originally appeared in Religious Congregations & Membership in the United States, 2000, published by the Glenmary Research Center.

The 1980 data were collected by the Glenmary Research Center and include statistics for 111 Judeo-Christian church bodies, including number of churches and adherents. Bernard Quinn, Herman Anderson, Martin Bradley, Paul Goetting and Peggy Shriver supervised the collection. These data originally appeared in Churches and Church Membership in the United States, 1980, published by the Glenmary Research Center.

[More information on these data sources]