County Membership Report
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Du Page County, Illinois

Denominational Groups, 2000

74,185 80,157 7,815 349,415 20,837 371,752
Evangelical Protestant Mainline Protestant Orthodox Catholic Other Unclaimed

Congregational "adherents" include all full members, their children, and others who regularly attend services. The historically African American denominations are not included in the 2000 congregation and membership totals. Many are also missing in 1990 and most historically African American denominations are missing in the 1980 reports.
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Reports


Religious Bodies Theology Congregations Adherents % Change
Catholic Church Catholic +10 +108,385 45.0%
Assemblies of God Evangelical Protestant +1 +7,108 212.0%
Evangelical Lutheran Church in America Mainline Protestant +1 +6,474 32.0%
Independent, Non-Charismatic Churches Evangelical Protestant +6 +5,969 n.a.
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox +1 +3,135 n.a.
Christian Reformed Church in North America Evangelical Protestant +4 +2,319 100.0%
Christian Churches and Churches of Christ Evangelical Protestant -1 +2,236 210.0%
Greek Orthodox Archdiocese of America Orthodox +2 +2,082 n.a.
Evangelical Free Church of America, The Evangelical Protestant +3 +1,630 144.0%
Jewish Estimate Other Theology 0 +1,325 230.0%
Presbyterian Church in America Evangelical Protestant +4 +1,149 927.0%
Church of Jesus Christ of Latter-day Saints, The Other Theology +4 +1,117 66.0%
Lutheran Church--Missouri Synod Evangelical Protestant +1 +1,096 4.0%
Salvation Army, The Evangelical Protestant 0 +616 226.0%
Christian and Missionary Alliance, The Evangelical Protestant +6 +578 52.0%
Church of the Nazarene Evangelical Protestant +1 +531 128.0%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant 0 +441 162.0%
Wesleyan Church, The Evangelical Protestant +2 +416 n.a.
Evangelical Presbyterian Church Evangelical Protestant +1 +382 n.a.
Ukrainian Orthodox Church of the USA Orthodox +1 +372 n.a.
Seventh-day Adventist Church Evangelical Protestant +3 +367 14.0%
Church of God (Cleveland, Tennessee) Evangelical Protestant +1 +286 1192.0%
Unitarian Universalist Association of Congregations Other Theology +1 +219 40.0%
Evangelical Covenant Church, The Evangelical Protestant +2 +216 14.0%
Christian Church (Disciples of Christ) Mainline Protestant +1 +198 49.0%
Reformed Church in America Mainline Protestant +1 +56 9.0%
Church of God General Conference Evangelical Protestant +1 +32 n.a.
Church of the Brethren Evangelical Protestant 0 +26 5.0%
Churches of Christ Evangelical Protestant 0 +8 1.0%
Missionary Church, The Evangelical Protestant -1 +7 11.0%
Friends (Quakers) Mainline Protestant 0 -6 -8.0%
Free Methodist Church of North America Evangelical Protestant 0 -46 -51.0%
Orthodox Presbyterian Church, The Evangelical Protestant 0 -85 -32.0%
American Baptist Association, The Evangelical Protestant 0 -87 -58.0%
American Baptist Churches in the USA Mainline Protestant +3 -127 -17.0%
Baptist General Conference Evangelical Protestant 0 -138 -15.0%
North American Baptist Conference Evangelical Protestant -1 -232 -34.0%
Church of God (Anderson, Indiana) Evangelical Protestant 0 -253 -80.0%
National Association of Congregational Christian Churches Mainline Protestant -2 -348 -60.0%
Conservative Baptist Association of America Evangelical Protestant -1 -452 -42.0%
United Church of Christ Mainline Protestant -1 -735 -5.0%
Southern Baptist Convention Evangelical Protestant +1 -1,151 -35.0%
Episcopal Church Mainline Protestant -1 -1,881 -22.0%
Presbyterian Church (U.S.A.) Mainline Protestant +3 -2,650 -21.0%
United Methodist Church, The Mainline Protestant +2 -2,955 -13.0%
  Totals: +59 +137,630 +36.7%

The population of this county (or equivalent) in 1980 was 658,835; in 2000 it was 904,161. The total population changed 15.7%. The adherent totals for 1980 (376,040) represent 57.1% of the 1980 population. The adherent totals for 2000 (532,409) include 58.9% of the 2000 population. The totals represent the change in groups that reported in both 1980 and 2000 only. There is sufficient data for 45 groups to calculate 1980-2000 change. These 45 groups had 374,719 adherents in 1980 and 512,349 adherents in 2000, for a change of 36.7%

Sources

The 2000 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and includes statistics for 149 religious groups, including number of churches and adherents. Dale E. Jones, Sherri Doty, Clifford Grammich, James E. Horsch, Richard Houseal, Mac Lynn, John P. Marcum, Kenneth M. Sanchagrin and Richard H. Taylor supervised the collection. These data originally appeared in Religious Congregations & Membership in the United States, 2000, published by the Glenmary Research Center.

The 1980 data were collected by the Glenmary Research Center and include statistics for 111 Judeo-Christian church bodies, including number of churches and adherents. Bernard Quinn, Herman Anderson, Martin Bradley, Paul Goetting and Peggy Shriver supervised the collection. These data originally appeared in Churches and Church Membership in the United States, 1980, published by the Glenmary Research Center.

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