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Snohomish County (Washington)

Religious Traditions, 2010

85,354 406 21,642 75,393 1,943 34,270 494,327
Evangelical Protestant Black Protestant Mainline Protestant Catholic Orthodox 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]


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Catholic Church Catholic Catholicism 15 30,458 65.41
Evangelical Lutheran Church in America Mainline Protestant Lutheran 28 14,484 31.11
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 29 12,596 27.05
Jewish Other Judaism 0 7,325 15.73
United Methodist Church, The Mainline Protestant Methodist/Pietist 13 6,869 14.75
Assemblies of God Evangelical Protestant Pentecostal 26 5,032 10.81
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 13 4,648 9.98
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 6 4,412 9.48
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 9 3,514 7.55
American Baptist Churches in the USA Mainline Protestant Baptist 10 2,936 6.31
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 9 2,768 5.94
Independent, Charismatic Churches Evangelical Protestant Pentecostal 4 2,680 5.76
Southern Baptist Convention Evangelical Protestant Baptist 13 2,347 5.04
Seventh-day Adventist Church Evangelical Protestant Adventist 10 2,271 4.88
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 8 2,111 4.53
Christian and Missionary Alliance, The Evangelical Protestant Holiness 7 1,997 4.29
Free Methodist Church of North America Evangelical Protestant Holiness 9 1,649 3.54
Independent, Non-Charismatic Churches Evangelical Protestant
3 1,525 3.28
Church of the Nazarene Evangelical Protestant Holiness 7 1,434 3.08
Black Baptists Estimate Evangelical Protestant Baptist --- 1,316 2.83
Churches of Christ Evangelical Protestant Baptist 6 919 1.97
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran 3 911 1.96
Christian Churches and Churches of Christ Evangelical Protestant Baptist 7 866 1.86
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 3 848 1.82
United Church of Christ Mainline Protestant Presbyterian-Reformed 4 587 1.26
Unitarian Universalist Association of Congregations Other Liberal 2 547 1.17
Christian Brethren Evangelical Protestant Ind. Fundamentalist 3 545 1.17
Reformed Church in America Mainline Protestant Presbyterian-Reformed 2 384 0.82
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 3 337 0.72
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 3 323 0.69
North American Baptist Conference Evangelical Protestant Baptist 3 311 0.67
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 3 280 0.60
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 2 276 0.59
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 3 262 0.56
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 254 0.55
Salvation Army Evangelical Protestant Holiness 1 138 0.30
Church of the Lutheran Confession Evangelical Protestant Lutheran 1 119 0.26
Church of God of Prophecy Evangelical Protestant Pentecostal 3 104 0.22
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 1 92 0.20
Pentecostal Church of God Evangelical Protestant Pentecostal 1 77 0.17
Advent Christian Church Evangelical Protestant Adventist 1 60 0.13
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 1 41 0.09
Friends (Quakers) Mainline Protestant European Free-Church 1 8 0.02
Church of Christ, Scientist Other Christian Science 4 --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist 5 --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist 4 --- ---
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal 6 --- ---
Totals: 296 120,661  

The population of Snohomish County, Washington was 465,642 in 1990; in 1980 it was 337,720. The total population changed 37.9%. The adherent totals of the religious groups listed above (120,661) included 25.9% 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 for those who are interested in these trends.


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.

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