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Boulder, CO, Metropolitan Statistical Area

Religious Traditions, 2010

28,825 19,126 59,240 718 14,359 172,299
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 Churches in the USA Mainline Protestant Baptist 3 1,315 5.84
Assemblies of God Evangelical Protestant Pentecostal 4 339 1.50
Black Baptists Estimate Evangelical Protestant Baptist --- 513 2.28
Catholic Church Catholic Catholicism 10 27,336 121.31
Christian and Missionary Alliance, The Evangelical Protestant Holiness 2 182 0.81
Christian Brethren Evangelical Protestant Ind. Fundamentalist 3 226 1.00
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 399 1.77
Christian Churches and Churches of Christ Evangelical Protestant Baptist 6 3,156 14.01
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 2 239 1.06
Church of Christ, Scientist Other Christian Science 2 --- ---
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 1 48 0.21
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 1 41 0.18
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 11 4,711 20.91
Church of the Brethren Evangelical Protestant European Free-Church 1 0 0.00
Church of the Nazarene Evangelical Protestant Holiness 4 780 3.46
Churches of Christ Evangelical Protestant Baptist 5 918 4.07
Conservative Baptist Association of America Evangelical Protestant Baptist 4 --- ---
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 1 257 1.14
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 7 3,593 15.94
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 3 893 3.96
Evangelical Lutheran Church in America Mainline Protestant Lutheran 10 6,778 30.08
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 4 586 2.60
Free Methodist Church of North America Evangelical Protestant Holiness 1 53 0.24
Friends (Quakers) Mainline Protestant European Free-Church 1 201 0.89
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Independent, Charismatic Churches Evangelical Protestant Pentecostal 2 1,975 8.76
Independent, Non-Charismatic Churches Evangelical Protestant
2 900 3.99
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 2 372 1.65
Jewish Other Judaism 2 5,486 24.35
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 8 3,209 14.24
Mennonite Church USA Evangelical Protestant European Free-Church 1 74 0.33
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 1 111 0.49
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 10 5,495 24.39
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 1 78 0.35
Salvation Army Evangelical Protestant Holiness 1 21 0.09
Seventh Day Baptist General Conference, USA and Canada Evangelical Protestant Baptist 1 92 0.41
Seventh-day Adventist Church Evangelical Protestant Adventist 3 1,207 5.36
Southern Baptist Convention Evangelical Protestant Baptist 8 2,518 11.17
Unitarian Universalist Association of Congregations Other Liberal 2 381 1.69
United Church of Christ Mainline Protestant Presbyterian-Reformed 5 2,466 10.94
United Methodist Church, The Mainline Protestant Methodist/Pietist 12 6,536 29.01
Wesleyan Church, The Evangelical Protestant Holiness 1 0 0.00
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 2 353 1.57
Totals: 152 83,838  

The population of the Boulder, CO, Metropolitan Statistical Area was 225,339 in 1990; in 1980 it was 189,625. The total population changed 18.8%. The adherent totals of the religious groups listed above (83,838) included 37.2% 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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