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Rockford, IL, Metropolitan Statistical Area

Religious Traditions, 2010

59,123 5,544 34,426 1,248 69,793 4,878 174,419
Evangelical Protestant Black Protestant Mainline Protestant Orthodox Catholic 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 4 1,550 5.5
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 1 113 0.4
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church --- --- ---
Assemblies of God Evangelical Protestant Pentecostal 10 4,421 15.6
Black Baptists Estimate Evangelical Protestant Baptist --- 7,189 25.3
Catholic Church Catholic Catholicism 17 51,000 179.8
Christian and Missionary Alliance, The Evangelical Protestant Holiness 1 29 0.1
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement 3 439 1.5
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement 4 1,251 4.4
Church of Christ, Scientist Other Christian Science 2 --- ---
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 3 93 0.3
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 2 78 0.3
Church of God General Conference Evangelical Protestant Adventist 2 68 0.2
Church of God of Prophecy Evangelical Protestant Pentecostal 1 48 0.2
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 2 883 3.1
Church of the Brethren Evangelical Protestant European Free-Church 1 125 0.4
Church of the Nazarene Evangelical Protestant Holiness 6 853 3.0
Church of the United Brethren in Christ Evangelical Protestant Methodist/Pietist 1 35 0.1
Churches of Christ Evangelical Protestant Restoration Movement 10 1,189 4.2
Conservative Baptist Association of America Evangelical Protestant Baptist 1 --- ---
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed --- --- ---
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 3 1,072 3.8
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 4 1,559 5.5
Evangelical Congregational Church, The Evangelical Protestant Methodist/Pietist 1 76 0.3
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 6 2,986 10.5
Evangelical Lutheran Church in America Mainline Protestant Lutheran 25 24,785 87.4
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 39 0.1
Free Methodist Church of North America Evangelical Protestant Holiness 1 64 0.2
Friends (Quakers) Mainline Protestant European Free-Church 1 16 0.1
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Independent, Charismatic Churches Evangelical Protestant Pentecostal 3 900 3.2
Independent, Non-Charismatic Churches Evangelical Protestant
1 1,100 3.9
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 1 84 0.3
Jewish Other Judaism 2 1,000 3.5
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 10 6,800 24.0
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 1 64 0.2
National Association of Free Will Baptists Evangelical Protestant Baptist 1 21 0.1
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal 2 --- ---
Pentecostal Church of God Evangelical Protestant Pentecostal --- --- ---
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 10 5,476 19.3
Reformed Church in America Mainline Protestant Presbyterian-Reformed 1 277 1.0
Reformed Episcopal Church Evangelical Protestant Episcopalianism/Anglicanism 1 5 0.0
Salvation Army Evangelical Protestant Holiness 3 503 1.8
Seventh-day Adventist Church Evangelical Protestant Adventist 2 415 1.5
Southern Baptist Convention Evangelical Protestant Baptist 10 2,975 10.5
Unitarian Universalist Association of Congregations Other Liberal 2 680 2.4
United Church of Christ Mainline Protestant Presbyterian-Reformed 10 4,377 15.4
United Methodist Church, The Mainline Protestant Methodist/Pietist 29 13,427 47.3
Wesleyan Church, The Evangelical Protestant Holiness 1 181 0.6
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 3 452 1.6
Totals: 207 138,698  

The population of the Rockford, IL, Metropolitan Statistical Area was 283,719 in 1990; in 1980 it was 279,514. The total population changed 1.5%. The adherent totals of the religious groups listed above (138,698) included 48.9% of the total population in 1990.

Rockford, IL, Metropolitan Statistical Area includes the following 2 counties: Boone County, Illinois, Winnebago County, Illinois.

* 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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