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