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Harford County (Maryland)

Religious Traditions, 2010

23,645 1,628 22,305 44,618 900 2,675 149,055
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 7 1,428 6.53
Bahá'í Other Other Groups 1 43 0.20
Catholic Church Catholic Catholicism 13 65,201 298.28
Christian and Missionary Alliance, The Evangelical Protestant Holiness 1 80 0.37
Christian Churches and Churches of Christ Evangelical Protestant Baptist 4 2,418 11.06
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 7 940 4.30
Church of God of Prophecy Evangelical Protestant Pentecostal 1 58 0.27
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 4 1,073 4.91
Church of the Nazarene Evangelical Protestant Holiness 2 541 2.47
Churches of Christ Evangelical Protestant Baptist 2 247 1.13
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 9 2,516 11.51
Evangelical Lutheran Church in America Mainline Protestant Lutheran 7 6,452 29.52
Friends (Quakers) Mainline Protestant European Free-Church 2 269 1.23
Independent, Non-Charismatic Churches Evangelical Protestant
1 400 1.83
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 2 90 0.41
Jewish Other Judaism 1 1,200 5.49
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 2 1,625 7.43
National Association of Free Will Baptists Evangelical Protestant Baptist 2 252 1.15
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 11 3,867 17.69
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 2 413 1.89
Primitive Baptist Church, The Evangelical Protestant Baptist 2 --- ---
Salvation Army Evangelical Protestant Holiness 1 120 0.55
Seventh-day Adventist Church Evangelical Protestant Adventist 3 358 1.64
Southern Baptist Convention Evangelical Protestant Baptist 15 6,536 29.90
Southwide Baptist Fellowship Evangelical Protestant Baptist 1 --- ---
Unitarian Universalist Association of Congregations Other Liberal 1 207 0.95
United Church of Christ Mainline Protestant Presbyterian-Reformed 1 211 0.97
United Methodist Church, The Mainline Protestant Methodist/Pietist 33 12,619 57.73
Totals: 138 109,164  

The population of Harford County, Maryland was 218,590 in 2000; in 1990 it was 182,132. The total population changed 20.0%. The adherent totals of the religious groups listed above (109,164) included 49.9% 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 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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