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Chicago-Naperville-Elgin, IL-IN-WI, Metropolitan Statistical Area

Religious Traditions, 2010

924,108 196,678 483,917 3,236,794 85,116 481,556 4,052,936
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 641 3,405,560 374.31
United Methodist Church, The Mainline Protestant Methodist/Pietist 335 128,278 14.10
Evangelical Lutheran Church in America Mainline Protestant Lutheran 301 169,865 18.67
Southern Baptist Convention Evangelical Protestant Baptist 271 92,525 10.17
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 265 152,491 16.76
United Church of Christ Mainline Protestant Presbyterian-Reformed 200 98,547 10.83
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 183 74,731 8.21
Assemblies of God Evangelical Protestant Pentecostal 147 43,443 4.77
Jewish Other Judaism 143 265,300 29.16
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 129 42,267 4.65
American Baptist Churches in the USA Mainline Protestant Baptist 105 37,279 4.10
Churches of Christ Evangelical Protestant Baptist 99 12,159 1.34
Seventh-day Adventist Church Evangelical Protestant Adventist 93 22,699 2.49
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 88 21,212 2.33
Christian Churches and Churches of Christ Evangelical Protestant Baptist 81 25,686 2.82
Church of the Nazarene Evangelical Protestant Holiness 75 11,151 1.23
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 71 16,871 1.85
Muslim Estimate Other Other Groups 65 120,293 13.22
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 62 21,653 2.38
Buddhists Other Other Groups 59 --- ---
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 57 9,145 1.01
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 57 13,840 1.52
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 54 22,524 2.48
Christian and Missionary Alliance, The Evangelical Protestant Holiness 43 5,338 0.59
General Association of Regular Baptist Churches Evangelical Protestant Baptist 43 7,748 0.85
Bahá'í Other Other Groups 37 3,776 0.42
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 34 4,733 0.52
Reformed Church in America Mainline Protestant Presbyterian-Reformed 33 13,378 1.47
Salvation Army Evangelical Protestant Holiness 32 11,712 1.29
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 30 38,592 4.24
Christian Church (Disciples of Christ) Mainline Protestant Baptist 29 6,876 0.76
Hindus Other Other Groups 29 --- ---
Independent, Non-Charismatic Churches Evangelical Protestant
----
29 36,802 4.04
New Testament Association of Independent Baptist Churches and other Fundamental Bapti Evangelical Protestant Baptist 29 7,970 0.88
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 28 3,876 0.43
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 27 11,084 1.22
Unitarian Universalist Association of Congregations Other Liberal 24 5,142 0.57
Conservative Baptist Association of America Evangelical Protestant Baptist 22 4,478 0.49
Mennonite Church USA Evangelical Protestant European Free-Church 22 3,602 0.40
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 21 3,299 0.36
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 17 9,286 1.02
Vineyard USA Evangelical Protestant Pentecostal 17 3,767 0.41
Church of God of Prophecy Evangelical Protestant Pentecostal 14 735 0.08
Free Methodist Church of North America Evangelical Protestant Holiness 14 1,219 0.13
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 14 2,702 0.30
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 13 3,661 0.40
Friends (Quakers) Mainline Protestant European Free-Church 12 951 0.10
Independent, Charismatic Churches Evangelical Protestant Pentecostal 12 6,925 0.76
North American Baptist Conference Evangelical Protestant Baptist 12 2,471 0.27
Pentecostal Church of God Evangelical Protestant Pentecostal 12 928 0.10
Wesleyan Church, The Evangelical Protestant Holiness 12 2,551 0.28
Church of the Brethren Evangelical Protestant European Free-Church 11 1,940 0.21
Community of Christ Other Latter-day Saints 10 1,077 0.12
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 8 2,561 0.28
Baptist Missionary Association of America Evangelical Protestant Baptist 7 795 0.09
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 7 768 0.08
Serbian Orthodox Church in the USA (New Gracanica Metropolitanate) Orthodox Eastern Liturgical (Orthodox) 7 --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 6 --- ---
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 6 188 0.02
Missionary Church, The Evangelical Protestant Holiness 6 2,415 0.27
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 6 10,180 1.12
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 6 1,418 0.16
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 5 298 0.03
National Association of Free Will Baptists Evangelical Protestant Baptist 5 550 0.06
National Primitive Baptist Convention, USA Evangelical Protestant Baptist 5 669 0.07
Primitive Baptist Church, The Evangelical Protestant Baptist 5 --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 5 2,028 0.22
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 4 1,800 0.20
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox Eastern Liturgical (Orthodox) 4 22,785 2.50
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 4 859 0.09
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 4 3,988 0.44
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 4 960 0.11
Protestant Reformed Churches in America Evangelical Protestant Presbyterian-Reformed 4 776 0.09
Sikh Other Other Groups 4 --- ---
Southwide Baptist Fellowship Evangelical Protestant Baptist 4 --- ---
American Baptist Association, The Evangelical Protestant Baptist 3 191 0.02
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 3 623 0.07
Macedonian Orthodox Church: American Diocese Orthodox Eastern Liturgical (Orthodox) 3 3,800 0.42
Malankara Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) 3 1,000 0.11
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 3 3,100 0.34
Zoroastrian Other Other Groups 3 --- ---
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 2 1,085 0.12
Cumberland Presbyterian Church Evangelical Protestant Presbyterian-Reformed 2 53 0.01
Fellowship of Evangelical Churches Evangelical Protestant European Free-Church 2 52 0.01
Jain Other Other Groups 2 --- ---
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 2 300 0.03
Albanian Orthodox Diocese of America Orthodox Eastern Liturgical (Orthodox) 1 270 0.03
Apostolic Christian Churches (Nazarene) Evangelical Protestant European Free-Church 1 14 0.00
Bulgarian Eastern Orthodox Diocese of the USA, Canada and Australia Orthodox Eastern Liturgical (Orthodox) 1 900 0.10
Church of God General Conference Evangelical Protestant Adventist 1 32 0.00
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed 1 225 0.02
Enterprise Baptists Association Evangelical Protestant Baptist 1 49 0.01
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed 1 382 0.04
Greek Orthodox Archdiocese of Vasiloupulis Orthodox Eastern Liturgical (Orthodox) 1 1,200 0.13
Holy Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 1 18 0.00
International Churches of Christ Evangelical Protestant Baptist 1 4,582 0.50
Mennonite; Other Groups Evangelical Protestant European Free-Church 1 97 0.01
Netherlands Reformed Congregations Evangelical Protestant Presbyterian-Reformed 1 31 0.00
Orthodox Church in America: Bulgarian Diocese Orthodox Eastern Liturgical (Orthodox) 1 1,830 0.20
Primitive Methodist Church in the USA Evangelical Protestant Methodist/Pietist 1 61 0.01
Romanian Orthodox Archdiocese in Americas Orthodox Eastern Liturgical (Orthodox) 1 525 0.06
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Syriac Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) 1 270 0.03
U.S. Mennonite Brethren Evangelical Protestant European Free-Church 1 14 0.00
Totals: 4,425 5,087,880  

The population of the Chicago-Naperville-Elgin, IL-IN-WI, Metropolitan Statistical Area was 9,098,316 in 2000; in 1990 it was 8,182,076. The total population changed 11.2%. The adherent totals of the religious groups listed above (5,087,880) included 55.9% 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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