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