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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
American Baptist Association, The Evangelical Protestant Baptist 1 44 0.13
American Baptist Churches in the USA Mainline Protestant Baptist 4 1,023 3.02
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 1 30 0.09
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 1 616 1.82
Assemblies of God Evangelical Protestant Pentecostal 12 2,740 8.10
Bahá'í Other Other Groups 7 334 0.99
Buddhists Other Other Groups 1 --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 1 --- ---
Catholic Church Catholic Catholicism 12 21,303 62.95
Christian and Missionary Alliance, The Evangelical Protestant Holiness 3 630 1.86
Christian Churches and Churches of Christ Evangelical Protestant Baptist 12 4,010 11.85
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 3 115 0.34
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 1 260 0.77
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 28 11,318 33.45
Church of the Nazarene Evangelical Protestant Holiness 7 1,692 5.00
Churches of Christ Evangelical Protestant Baptist 8 742 2.19
Conservative Baptist Association of America Evangelical Protestant Baptist 18 3,210 9.49
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 1 11 0.03
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 7 2,933 8.67
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 2 739 2.18
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 2 575 1.70
Evangelical Lutheran Church in America Mainline Protestant Lutheran 14 6,594 19.49
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 13 3,893 11.50
Free Methodist Church of North America Evangelical Protestant Holiness 1 37 0.11
Friends (Quakers) Mainline Protestant European Free-Church 2 210 0.62
Independent, Non-Charismatic Churches Evangelical Protestant
2 8,650 25.56
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 1 88 0.26
Jewish Other Judaism 1 3,100 9.16
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 7 2,576 7.61
Mennonite Church USA Evangelical Protestant European Free-Church 3 615 1.82
Mennonite; Other Groups Evangelical Protestant European Free-Church 1 81 0.24
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 1 194 0.57
National Association of Free Will Baptists Evangelical Protestant Baptist 1 86 0.25
North American Baptist Conference Evangelical Protestant Baptist 2 215 0.64
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 1 141 0.42
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 1 59 0.17
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 8 2,991 8.84
Primitive Baptist Church, The Evangelical Protestant Baptist 1 --- ---
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 1 200 0.59
Seventh-day Adventist Church Evangelical Protestant Adventist 9 2,533 7.49
Southern Baptist Convention Evangelical Protestant Baptist 7 1,695 5.01
Unitarian Universalist Association of Congregations Other Liberal 2 265 0.78
United Church of Christ Mainline Protestant Presbyterian-Reformed 6 1,029 3.04
United Methodist Church, The Mainline Protestant Methodist/Pietist 14 3,496 10.33
Wesleyan Church, The Evangelical Protestant Holiness 1 500 1.48
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 1 178 0.53
Totals: 234 91,751  

The population of Clackamas County, Oregon was 338,391 in 2000; in 1990 it was 278,850. The total population changed 21.4%. The adherent totals of the religious groups listed above (91,751) included 27.1% of the total population in 2000.

* 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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