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New Haven County (Connecticut)

Religious Traditions, 2010

33,484 6,471 52,851 304,677 3,731 19,943 441,320
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]

Reports


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Catholic Church Catholic Catholicism 103 319,399 387.62
United Church of Christ Mainline Protestant Presbyterian-Reformed 45 23,241 28.20
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 43 13,200 16.02
Assemblies of God Evangelical Protestant Pentecostal 25 3,466 4.21
United Methodist Church, The Mainline Protestant Methodist/Pietist 23 9,801 11.89
American Baptist Churches in the USA Mainline Protestant Baptist 20 8,540 10.36
Jewish Other Judaism 19 28,900 35.07
Evangelical Lutheran Church in America Mainline Protestant Lutheran 14 4,706 5.71
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 8 995 1.21
Churches of Christ Evangelical Protestant Baptist 8 860 1.04
Seventh-day Adventist Church Evangelical Protestant Adventist 8 1,256 1.52
Buddhists Other Other Groups 7 --- ---
Christian and Missionary Alliance, The Evangelical Protestant Holiness 7 529 0.64
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 7 1,896 2.30
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 7 2,306 2.80
Muslim Estimate Other Other Groups 7 11,546 14.01
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 5 575 0.70
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 5 825 1.00
Salvation Army Evangelical Protestant Holiness 5 924 1.12
Southern Baptist Convention Evangelical Protestant Baptist 5 291 0.35
Christian Churches and Churches of Christ Evangelical Protestant Baptist 4 196 0.24
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 4 942 1.14
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 4 782 0.95
Unitarian Universalist Association of Congregations Other Liberal 4 744 0.90
Church of God of Prophecy Evangelical Protestant Pentecostal 3 267 0.32
Church of the Nazarene Evangelical Protestant Holiness 3 93 0.11
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 3 2,346 2.85
Bahá'í Other Other Groups 2 179 0.22
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 2 177 0.21
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 2 293 0.36
Vineyard USA Evangelical Protestant Pentecostal 2 334 0.41
American Baptist Association, The Evangelical Protestant Baptist 1 25 0.03
Apostolic Christian Churches (Nazarene) Evangelical Protestant European Free-Church 1 35 0.04
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 1 100 0.12
Community of Christ Other Latter-day Saints 1 60 0.07
Conservative Baptist Association of America Evangelical Protestant Baptist 1 150 0.18
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 123 0.15
Friends (Quakers) Mainline Protestant European Free-Church 1 53 0.06
Independent, Charismatic Churches Evangelical Protestant Pentecostal 1 1,800 2.18
Independent, Non-Charismatic Churches Evangelical Protestant
----
1 300 0.36
Jain Other Other Groups 1 --- ---
Mennonite Church USA Evangelical Protestant European Free-Church 1 99 0.12
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 1 81 0.10
North American Baptist Conference Evangelical Protestant Baptist 1 12 0.01
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 1 111 0.13
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 1 112 0.14
Reformed Baptist Churches Evangelical Protestant Baptist 1 --- ---
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Sikh Other Other Groups 1 --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 1 177 0.21
Totals: 423 442,847  

The population of New Haven County, Connecticut was 824,008 in 2000; in 1990 it was 804,219. The total population changed 2.5%. The adherent totals of the religious groups listed above (442,847) included 53.7% 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 www.usreligioncensus.org for those who are interested in these trends.

Source

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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