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Humboldt County (California)

Religious Traditions, 2010

9,256 4,364 9,901 65 5,373 105,664
Evangelical 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
Assemblies of God Evangelical Protestant Pentecostal 19 1,847 17.02
Southern Baptist Convention Evangelical Protestant Baptist 16 3,320 30.60
Catholic Church Catholic Catholicism 14 12,835 118.28
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 12 1,566 14.43
Church of the Nazarene Evangelical Protestant Holiness 7 1,272 11.72
Evangelical Lutheran Church in America Mainline Protestant Lutheran 7 1,373 12.65
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 6 2,059 18.97
Seventh-day Adventist Church Evangelical Protestant Adventist 6 1,493 13.76
Christian Churches and Churches of Christ Evangelical Protestant Baptist 5 507 4.67
Churches of Christ Evangelical Protestant Baptist 5 330 3.04
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 5 1,559 14.37
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 4 610 5.62
American Baptist Association, The Evangelical Protestant Baptist 3 114 1.05
American Baptist Churches in the USA Mainline Protestant Baptist 3 1,076 9.92
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 3 178 1.64
United Methodist Church, The Mainline Protestant Methodist/Pietist 3 1,389 12.80
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 2 106 0.98
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 2 820 7.56
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 93 0.86
Conservative Baptist Association of America Evangelical Protestant Baptist 1 60 0.55
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 1 196 1.81
Friends (Quakers) Mainline Protestant European Free-Church 1 50 0.46
Jewish Other Judaism 1 95 0.88
Salvation Army Evangelical Protestant Holiness 1 117 1.08
Unitarian Universalist Association of Congregations Other Liberal 1 143 1.32
United Church of Christ Mainline Protestant Presbyterian-Reformed 1 110 1.01
Black Baptists Estimate Evangelical Protestant Baptist 0 0 0.00
Church of Christ, Scientist Other Christian Science 0 0 0.00
Church of God of Prophecy Evangelical Protestant Pentecostal 0 0 0.00
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist 0 0 0.00
Independent, Charismatic Churches Evangelical Protestant Pentecostal 0 0 0.00
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 0 0 0.00
Pentecostal Church of God Evangelical Protestant Pentecostal 0 0 0.00
Wesleyan Church, The Evangelical Protestant Holiness 0 0 0.00
Totals: 130 33,318  

The population of Humboldt County, California was 108,514 in 1980. The adherent totals of the religious groups listed above (33,318) included 30.7% of the total population in 1980.

* 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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