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Washington

Religious Traditions, 2010

820,643 14,289 308,292 16,987 784,332 383,462 4,396,535
Evangelical Protestant Black Protestant Mainline Protestant Orthodox Catholic 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]

Reports


Religious Bodies Tradition Family Congregations Adherents % Change
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints +49 +89,267 +50.2%
Catholic Church Catholic Catholicism +0 +68,199 +9.5%
Assemblies of God Evangelical Protestant Pentecostal -5 +19,313 +18.3%
Seventh-day Adventist Church Evangelical Protestant Adventist +17 +9,722 +22.5%
U.S. Mennonite Brethren Evangelical Protestant European Free-Church +10 +6,527 +284.8%
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal +10 +5,440 +16.3%
Muslim Estimate Other Other Groups +18 +3,539 +22.8%
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist +8 +2,222 +22.7%
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) +1 +2,120 +54.4%
Unitarian Universalist Association of Congregations Other Liberal -1 +1,660 +28.5%
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) +0 +1,576 +170.6%
Bahá'í Other Other Groups -4 +1,270 +21.8%
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) +0 +1,100 +275.0%
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed +2 +961 +119.2%
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed +9 +769 +32.3%
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) +4 +684 +84.2%
Pentecostal Church of God Evangelical Protestant Pentecostal -7 +415 +26.9%
International Churches of Christ Evangelical Protestant Baptist +3 +397 +66.1%
Free Methodist Church of North America Evangelical Protestant Holiness -2 +380 +3.9%
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed +2 +335 +56.0%
Community of Christ Other Latter-day Saints -5 +283 +7.3%
Church of God of Prophecy Evangelical Protestant Pentecostal -3 +194 +20.9%
American Baptist Association, The Evangelical Protestant Baptist -9 +158 +13.6%
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church +0 +93 +65.0%
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) +3 +52 +4.4%
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed +1 +32 +26.9%
Protestant Reformed Churches in America Evangelical Protestant Presbyterian-Reformed +1 -14 -10.7%
Church of God General Conference Evangelical Protestant Adventist -1 -18 -15.1%
Holy Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) +1 -24 -13.0%
Mennonite Church USA Evangelical Protestant European Free-Church +0 -43 -7.3%
National Association of Free Will Baptists Evangelical Protestant Baptist +0 -72 -41.6%
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups -1 -81 -25.8%
Missionary Church, The Evangelical Protestant Holiness +2 -130 -32.7%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran -2 -191 -4.7%
Salvation Army Evangelical Protestant Holiness -4 -215 -2.8%
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed +0 -277 -34.0%
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist -5 -306 -5.4%
Church of God (Anderson, Indiana) Evangelical Protestant Holiness +0 -499 -6.5%
International Pentecostal Holiness Church Evangelical Protestant Pentecostal -10 -557 -32.0%
Church of the Brethren Evangelical Protestant European Free-Church +0 -601 -41.3%
Church of the Nazarene Evangelical Protestant Holiness +13 -608 -1.6%
Christian Churches and Churches of Christ Evangelical Protestant Baptist -1 -610 -2.8%
Reformed Church in America Mainline Protestant Presbyterian-Reformed -1 -824 -23.2%
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal -2 -910 -15.8%
North American Baptist Conference Evangelical Protestant Baptist -5 -924 -30.2%
Christian and Missionary Alliance, The Evangelical Protestant Holiness +11 -962 -4.9%
Wesleyan Church, The Evangelical Protestant Holiness -3 -1,041 -68.9%
Vineyard USA Evangelical Protestant Pentecostal -8 -1,178 -30.4%
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed +12 -1,536 -13.9%
Churches of Christ Evangelical Protestant Baptist +0 -1,570 -10.6%
United Church of Christ Mainline Protestant Presbyterian-Reformed -6 -2,695 -18.7%
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist +16 -3,361 -19.1%
American Baptist Churches in the USA Mainline Protestant Baptist -2 -4,449 -14.3%
Christian Church (Disciples of Christ) Mainline Protestant Baptist -7 -4,710 -38.0%
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran +0 -7,811 -19.2%
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism -9 -8,321 -19.9%
United Methodist Church, The Mainline Protestant Methodist/Pietist -14 -10,032 -13.1%
Southern Baptist Convention Evangelical Protestant Baptist +60 -10,644 -17.1%
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed -7 -12,886 -17.3%
Evangelical Lutheran Church in America Mainline Protestant Lutheran -20 -31,299 -24.5%
African Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist --- --- ---
American Association of Lutheran Churches Evangelical Protestant Lutheran --- --- ---
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism --- --- ---
Apostolic Faith Mission of Portland, OR Evangelical Protestant Pentecostal --- --- ---
Apostolic Lutheran Church of America Evangelical Protestant Lutheran --- --- ---
Association of Free Lutheran Congregations Evangelical Protestant Lutheran -2 --- ---
Association of Reformed Baptist Churches of America Evangelical Protestant Baptist --- --- ---
Bible Presbyterian Church (General Synod) Evangelical Protestant Presbyterian-Reformed --- --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal +13 --- ---
Canadian and American Reformed Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Christian Brethren Evangelical Protestant Ind. Fundamentalist --- --- ---
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
Church of Christ, Scientist Other Christian Science --- --- ---
Church of God (Seventh Day) Evangelical Protestant Adventist --- --- ---
Church of God by Faith, Inc. Evangelical Protestant Pentecostal --- --- ---
Church of God in Christ Black Protestant Pentecostal --- --- ---
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran --- --- ---
Church of the Lutheran Confession Evangelical Protestant Lutheran --- --- ---
Church of the United Brethren in Christ Evangelical Protestant Methodist/Pietist --- --- ---
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist -6 --- ---
Conservative Judaism Other Judaism --- --- ---
Conservative Lutheran Association Evangelical Protestant Lutheran --- --- ---
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) --- --- ---
Eritrean Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Ethiopian Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Evangelical Church, The Evangelical Protestant Holiness --- --- ---
Evangelical Friends Church International* Evangelical Protestant European Free-Church --- --- ---
Evangelical Lutheran Synod Evangelical Protestant Lutheran --- --- ---
Evangelical Methodist Church Evangelical Protestant Methodist/Pietist --- --- ---
Friends General Conference* Mainline Protestant European Free-Church --- --- ---
General Association of Regular Baptist Churches Evangelical Protestant Baptist -12 --- ---
Grace Brethren Churches, Fellowship of Mainline Protestant European Free-Church --- --- ---
Grace Gospel Fellowship Evangelical Protestant Ind. Fundamentalist --- --- ---
Hutterian Brethren Evangelical Protestant Communal -1 --- ---
Independent Baptist Fellowship International Evangelical Protestant Baptist --- --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist --- --- ---
Independent Yearly Meetings of Friends* Mainline Protestant European Free-Church --- --- ---
International Council of Community Churches Mainline Protestant Presbyterian-Reformed -5 --- ---
International Fellowship of Bible Churches Evangelical Protestant
----
--- --- ---
Jehovah's Witnesses Other Adventist --- --- ---
Korean Presbyterian Church Abroad Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean-American Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran --- --- ---
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) --- --- ---
Malankara Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) --- --- ---
National Baptist Convention of America, Inc. Black Protestant Baptist --- --- ---
National Baptist Convention, USA, Inc. Black Protestant Baptist --- --- ---
National Missionary Baptist Convention, Inc. Black Protestant Baptist --- --- ---
National Spiritualist Association of Churches Other Spiritualist --- --- ---
New Apostolic Church of North America, National Organization of the Other Other Groups --- --- ---
Non-denominational Evangelical Protestant
----
--- --- ---
North American Lutheran Church Evangelical Protestant Lutheran --- --- ---
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal --- --- ---
Orthodox Judaism Other Judaism --- --- ---
Polish National Catholic Church Catholic Catholicism --- --- ---
Reconstructionist Judaism Other Judaism --- --- ---
Reform Judaism Other Judaism --- --- ---
Reformed Baptist Churches Evangelical Protestant Baptist +3 --- ---
Reformed Presbyterian Church Hanover Presbytery Evangelical Protestant Presbyterian-Reformed --- --- ---
Reformed Presbyterian Church of North America Evangelical Protestant Presbyterian-Reformed --- --- ---
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) +2 --- ---
Seventh Day Baptist General Conference, USA and Canada Evangelical Protestant Baptist --- --- ---
Shinto Other Other Groups --- --- ---
Sikh Other Other Groups +2 --- ---
Swedenborgian Church Other Spiritualist --- --- ---
Tao Other Other Groups +1 --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) --- --- ---
Union of Messianic Jewish Congregations Other Judaism --- --- ---
United Pentecostal Church International Evangelical Protestant Pentecostal --- --- ---
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed +3 --- ---
Unity Churches, Association of Other Other Groups --- --- ---
Vicariate for the Palestinian/Jordanian Orthodox Christian Communities Orthodox Eastern Liturgical (Orthodox) --- --- ---
Zoroastrian Other Other Groups +0 --- ---
Totals: +107 +107,309 +6%

The population of Washington was 6,724,540 in 2010; in 2000 it was 5,894,121. The total population changed 14.1%. The adherent totals of the religious groups listed above (2,328,005) included 34.6% of the total population in 2010.

The population of Washington was 5,894,121 in 2000; in 1990 it was 4,866,692. The total population changed 21.1%. The adherent totals of the religious groups listed above (1,942,850) included 33.0% of the total population in 2000.

* 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 www.usreligioncensus.org for those who are interested in these trends.

Source

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.