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.