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Adams County (Iowa)

Religious Traditions, 2010

215 946 249 1 2,618
Evangelical Protestant Mainline Protestant 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 1 166 28.97
Catholic Church Catholic Catholicism 1 401 69.97
Christian Brethren Evangelical Protestant Ind. Fundamentalist 1 15 2.62
Christian Church (Disciples of Christ) Mainline Protestant Baptist 2 530 92.48
Christian Churches and Churches of Christ Evangelical Protestant Baptist 1 59 10.29
Church of the Brethren Evangelical Protestant European Free-Church 2 88 15.36
Evangelical Lutheran Church in America Mainline Protestant Lutheran 1 116 20.24
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 1 232 40.48
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 1 228 39.78
United Church of Christ Mainline Protestant Presbyterian-Reformed 1 73 12.74
United Methodist Church, The Mainline Protestant Methodist/Pietist 8 1,230 214.62
Totals: 20 3,138  

The population of Adams County, Iowa was 5,731 in 1980. The adherent totals of the religious groups listed above (3,138) included 54.8% of the total population in 1980.

* 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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