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Freeport, IL, Micropolitan Statistical Area

Religious Traditions, 2010

17,640 1,366 8,033 5,251 15 275 15,131
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]


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Assemblies of God Evangelical Protestant Pentecostal 1 1,000 20.81
Black Baptists Estimate Evangelical Protestant Baptist --- 767 15.96
Catholic Church Catholic Catholicism 6 6,923 144.07
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 1 139 2.89
Church of Christ, Scientist Other Christian Science 1 --- ---
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 1 60 1.25
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 1 290 6.04
Church of the Brethren Evangelical Protestant European Free-Church 3 247 5.14
Church of the Nazarene Evangelical Protestant Holiness 1 385 8.01
Churches of Christ Evangelical Protestant Baptist 1 137 2.85
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed 1 120 2.50
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 1 481 10.01
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 1 404 8.41
Evangelical Congregational Church, The Evangelical Protestant Methodist/Pietist 2 292 6.08
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 5 1,056 21.98
Evangelical Lutheran Church in America Mainline Protestant Lutheran 8 3,174 66.05
Free Methodist Church of North America Evangelical Protestant Holiness 3 183 3.81
Friends (Quakers) Mainline Protestant European Free-Church 1 6 0.12
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 3 1,822 37.92
Mennonite Church USA Evangelical Protestant European Free-Church 1 221 4.60
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal 1 --- ---
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 3 935 19.46
Reformed Church in America Mainline Protestant Presbyterian-Reformed 2 628 13.07
Salvation Army Evangelical Protestant Holiness 1 95 1.98
Seventh-day Adventist Church Evangelical Protestant Adventist 1 61 1.27
Southern Baptist Convention Evangelical Protestant Baptist 1 110 2.29
United Church of Christ Mainline Protestant Presbyterian-Reformed 6 2,426 50.49
United Methodist Church, The Mainline Protestant Methodist/Pietist 22 6,614 137.64
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 1 124 2.58
Totals: 80 28,700  

The population of the Freeport, IL, Micropolitan Statistical Area was 48,052 in 1990; in 1980 it was 49,536. The total population changed -3.0%. The adherent totals of the religious groups listed above (28,700) included 59.7% of the total population in 1990.

* 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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