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Clackamas County (Oregon)

Religious Traditions, 2010

49,829 15,118 27,128 2,275 15,447 266,195
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
Catholic Church Catholic Catholicism 11 19,007 78.57
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 14 6,569 27.15
Evangelical Lutheran Church in America Mainline Protestant Lutheran 10 6,192 25.60
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 7 4,065 16.80
Christian Churches and Churches of Christ Evangelical Protestant Baptist 15 3,951 16.33
United Methodist Church, The Mainline Protestant Methodist/Pietist 13 3,790 15.67
Conservative Baptist Association of America Evangelical Protestant Baptist 15 3,677 15.20
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 8 3,325 13.74
Seventh-day Adventist Church Evangelical Protestant Adventist 7 2,688 11.11
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 8 2,599 10.74
Assemblies of God Evangelical Protestant Pentecostal 11 1,869 7.73
American Baptist Churches in the USA Mainline Protestant Baptist 4 1,546 6.39
Church of the Nazarene Evangelical Protestant Holiness 5 1,321 5.46
United Church of Christ Mainline Protestant Presbyterian-Reformed 6 950 3.93
Evangelical Church, The Evangelical Protestant Holiness 6 891 3.68
Churches of Christ Evangelical Protestant Baptist 6 825 3.41
Southern Baptist Convention Evangelical Protestant Baptist 3 528 2.18
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 480 1.98
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 4 412 1.70
Mennonite Church Evangelical Protestant European Free-Church 3 404 1.67
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 2 391 1.62
Christian and Missionary Alliance, The Evangelical Protestant Holiness 3 349 1.44
Unitarian Universalist Association of Congregations Other Liberal 2 306 1.26
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 1 262 1.08
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 2 243 1.00
Free Methodist Church of North America Evangelical Protestant Holiness 2 219 0.91
North American Baptist Conference Evangelical Protestant Baptist 2 164 0.68
Friends (Quakers) Mainline Protestant European Free-Church 1 154 0.64
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 1 123 0.51
Mennonite Church, The General Conference Evangelical Protestant European Free-Church 1 109 0.45
American Baptist Association, The Evangelical Protestant Baptist 1 99 0.41
Christian Brethren Evangelical Protestant Ind. Fundamentalist 1 70 0.29
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 1 40 0.17
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 2 31 0.13
Advent Christian Church Evangelical Protestant Adventist 1 25 0.10
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 1 21 0.09
Evangelical Methodist Church Evangelical Protestant Methodist/Pietist 1 13 0.05
Black Baptists Estimate Evangelical Protestant Baptist 0 0 0.00
Church of Christ, Scientist Other Christian Science 0 0 0.00
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 1 0 0.00
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian-Reformed 0 0 0.00
Independent, Charismatic Churches Evangelical Protestant Pentecostal 0 0 0.00
Independent, Non-Charismatic Churches Evangelical Protestant
0 0 0.00
Jewish Other Judaism 0 0 0.00
Primitive Baptists Associations Evangelical Protestant Baptist 0 0 0.00
Wesleyan Church, The Evangelical Protestant Holiness 0 0 0.00
Totals: 183 67,708  

The population of Clackamas County, Oregon was 241,919 in 1980. The adherent totals of the religious groups listed above (67,708) included 28.0% 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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