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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
Catholic Church Catholic Catholicism -5 +257,786 +49.0%
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints +149 +116,633 +77.4%
Assemblies of God Evangelical Protestant Pentecostal -9 +40,240 +47.5%
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal +64 +16,521 +73.9%
Seventh-day Adventist Church Evangelical Protestant Adventist +56 +13,277 +33.5%
U.S. Mennonite Brethren Evangelical Protestant European Free-Church +18 +8,430 +2,167.1%
Church of the Nazarene Evangelical Protestant Holiness +19 +8,313 +29.5%
Christian and Missionary Alliance, The Evangelical Protestant Holiness +21 +5,396 +40.1%
Salvation Army Evangelical Protestant Holiness +2 +4,692 +173.9%
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist +21 +2,723 +23.7%
Unitarian Universalist Association of Congregations Other Liberal +3 +2,491 +49.8%
Christian Churches and Churches of Christ Evangelical Protestant Baptist -4 +2,442 +13.2%
Free Methodist Church of North America Evangelical Protestant Holiness -10 +2,063 +25.8%
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed +12 +1,342 +74.3%
Church of God (Anderson, Indiana) Evangelical Protestant Holiness +1 +1,244 +20.8%
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed +1 +1,127 +176.1%
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal +4 +786 +19.3%
International Pentecostal Holiness Church Evangelical Protestant Pentecostal +3 +281 +31.2%
Church of God of Prophecy Evangelical Protestant Pentecostal -6 +200 +21.7%
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church +1 +175 +286.9%
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist +0 +80 +1.5%
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed +2 +64 +73.6%
Evangelical Lutheran Synod Evangelical Protestant Lutheran +0 +59 +4.6%
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran -1 +21 +1.1%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran -1 +16 +0.4%
Seventh Day Baptist General Conference, USA and Canada Evangelical Protestant Baptist -1 +5 +5.1%
Church of the United Brethren in Christ Evangelical Protestant Methodist/Pietist -1 -20 -29.4%
Missionary Church, The Evangelical Protestant Holiness +0 -46 -14.6%
Church of God General Conference Evangelical Protestant Adventist -1 -160 -61.3%
Wesleyan Church, The Evangelical Protestant Holiness -4 -201 -30.0%
Mennonite Church USA Evangelical Protestant European Free-Church -1 -206 -27.2%
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist +1 -269 -34.9%
National Association of Free Will Baptists Evangelical Protestant Baptist -4 -409 -80.2%
North American Baptist Conference Evangelical Protestant Baptist +3 -466 -17.9%
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed +15 -613 -6.1%
Pentecostal Church of God Evangelical Protestant Pentecostal -18 -746 -27.6%
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed +0 -884 -62.2%
Reformed Church in America Mainline Protestant Presbyterian-Reformed +0 -928 -25.3%
Church of the Brethren Evangelical Protestant European Free-Church -1 -1,055 -55.3%
Churches of Christ Evangelical Protestant Baptist +4 -1,627 -10.9%
United Church of Christ Mainline Protestant Presbyterian-Reformed -15 -6,446 -35.5%
Christian Church (Disciples of Christ) Mainline Protestant Baptist -19 -7,090 -47.9%
Southern Baptist Convention Evangelical Protestant Baptist +92 -8,642 -14.3%
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran +2 -9,109 -21.7%
American Baptist Churches in the USA Mainline Protestant Baptist -18 -9,592 -26.5%
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed -1 -10,771 -14.9%
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism -6 -10,836 -24.5%
United Methodist Church, The Mainline Protestant Methodist/Pietist -8 -22,883 -25.6%
Evangelical Lutheran Church in America Mainline Protestant Lutheran -21 -35,973 -27.1%
American Association of Lutheran Churches Evangelical Protestant Lutheran +1 --- ---
Apostolic Lutheran Church of America Evangelical Protestant Lutheran +2 --- ---
Association of Free Lutheran Congregations Evangelical Protestant Lutheran -1 --- ---
Christian Brethren Evangelical Protestant Ind. Fundamentalist -25 --- ---
Church of Christ, Scientist Other Christian Science -29 --- ---
Church of God (Seventh Day) Evangelical Protestant Adventist +0 --- ---
Church of the Lutheran Confession Evangelical Protestant Lutheran +1 --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist -3 --- ---
Evangelical Methodist Church Evangelical Protestant Methodist/Pietist -1 --- ---
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) +2 --- ---
Hutterian Brethren Evangelical Protestant Communal +1 --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist +8 --- ---
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal -3 --- ---
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) +6 --- ---
Totals: +298 +357,435 +24%

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 4,866,692 in 1990; in 1980 it was 4,132,156. The total population changed 17.8%. The adherent totals of the religious groups listed above (1,612,516) included 33.1% of the total population in 1990.

* 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.