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Mercer County, New Jersey - County Membership Report (2020)

Exact definitions of "congregations" and "adherents" vary by religious body. Congregations may be parishes, churches, synagogues, mosques, temples, or another site where a religious body has regularly scheduled worship services. Adherents generally are members, children who are not members, and others who are not members but are considered participants in the congregation.

[More information on the data sources]

Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Catholic Church Catholic Catholic Liturgical Family 23 107,635 277.88
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 26 11,382 29.39
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 21 6,636 17.13
United Methodist Church Mainline Protestant Methodist Family 13 5,774 14.91
Muslim Estimate Islam Islam Family 7 5,224 13.49
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 20 5,184 13.38
Episcopal Church Mainline Protestant Anglican/Episcopal Family 11 5,181 13.38
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 18 4,053 10.46
National Baptist Convention, USA, Inc. Black Protestant Baptist Family 6 3,186 8.23
Conservative Judaism Judaism Judaism Family 3 2,635 6.80
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 11 2,438 6.29
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 7 2,372 6.12
African Methodist Episcopal Church Black Protestant Methodist Family 6 1,880 4.85
Reform Judaism Judaism Judaism Family 2 1,752 4.52
Hindu, Traditional Temples Hinduism Hinduism Family 1 1,731 4.47
Orthodox Judaism Judaism Judaism Family 3 1,650 4.26
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 3 1,509 3.90
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal Family 7 1,479 3.82
Unitarian Universalist Association Other Christians Liberal Family 2 1,324 3.42
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) Family 1 1,300 3.36
Seventh-day Adventist Church Evangelical Protestant Adventist Family 8 1,272 3.28
National Missionary Baptist Convention of America Black Protestant Baptist Family 5 1,246 3.22
Church of our Lord Jesus Christ of the Apostolic Faith, Inc. Black Protestant Pentecostal Family 6 756 1.95
Progressive National Baptist Convention, Inc. Black Protestant Baptist Family 1 700 1.81
Ukrainian Orthodox Church of the U.S.A. Orthodox Eastern Liturgical (Orthodox) Family 2 670 1.73
Christian and Missionary Alliance Evangelical Protestant Holiness Family 4 483 1.25
Churches of Christ Evangelical Protestant Restorationists Family 3 475 1.23
Hindu Yoga and Meditation Hinduism 3 463 1.20
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 2 420 1.08
Southern Baptist Convention Evangelical Protestant Baptist Family 7 396 1.02
African Methodist Episcopal Zion Church Black Protestant Methodist Family 2 384 0.99
Church of God in Christ Black Protestant Pentecostal Family 3 372 0.96
Church of God (Anderson, Indiana) Evangelical Protestant Holiness Family 3 310 0.80
Orthodox Church in America, The Orthodox Eastern Liturgical (Orthodox) Family 2 295 0.76
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 1 287 0.74
Church of the Nazarene Evangelical Protestant Holiness Family 3 271 0.70
Presbyterian Church in America Evangelical Protestant Presbyterian/Reformed Family 3 243 0.63
Friends General Conference Mainline Protestant Friends/Brethren Family 2 231 0.60
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 3 204 0.53
Baha'i Faith Other Other Groups Family 2 193 0.50
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 1 158 0.41
National Baptist Convention of America International, Inc. Black Protestant Baptist Family 1 150 0.39
Wesleyan Church Evangelical Protestant Holiness Family 2 130 0.34
United Holy Church of America Black Protestant Pentecostal Family 5 120 0.31
Reconstructionist Judaism Judaism Judaism Family 1 113 0.29
Buddhism, Mahayana Buddhism Buddhism Family 4 108 0.28
Pentecostal Assemblies of the World Black Protestant Pentecostal Family 1 104 0.27
Association of Vineyard Churches Evangelical Protestant Pentecostal Family 1 100 0.26
Buddhism, Vajrayana Buddhism Buddhism Family 1 100 0.26
Salvation Army Evangelical Protestant Holiness Family 1 71 0.18
Universal Fellowship of Metropolitan Community Churches Mainline Protestant Other Groups Family 1 18 0.05
Evangelical Covenant Church Evangelical Protestant Methodist Family 1 0 0.00
Independent Judaism Judaism 1 0 0.00
Evangelical Free Church of America Evangelical Protestant Methodist Family 1
Orthodox Presbyterian Church Evangelical Protestant Presbyterian/Reformed Family 1
Polish National Catholic Church of America Catholic Catholic Liturgical Family 1
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 1
Chabad Judaism Judaism 4
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 2
The Local Churches Evangelical Protestant 1
Alliance of Baptists Mainline Protestant Baptist Family 1
American Sikh Council Other Other Groups Family 2
Conservative Baptist Association of America (CBAmerica) Evangelical Protestant Baptist Family 3
Church of Christ, Scientist Other Christians Christian Science Family 1
United Pentecostal Church International Evangelical Protestant Pentecostal Family 4

Religious Traditions (1980 - 2020), Percent of Population

The population of this county was 387,340 in 2020. The adherent totals of the religious groups listed above (185,168) included 47.8% of the total population in 2020. The adherence rate is the number of adherents of a given group per 1,000 people in the general population.

Note that data collection methods for religious bodies change over time, affecting the comparability of statistics. For further information, see the U.S. Religion Census website at

The 2020 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include data for 372 religious bodies or groups. Of these, the ASARB was able to gather data on congregations and adherents for 217 and on congregations only for 155.

[More information on the data sources]

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