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Religion in Pennsylvania

Pennsylvania had rich and diverse religious cultures, and the freedom to practice beliefs has helped give rise to a highly unique religious pluralism and freedom. Pennsylvania is the US state with the 5th largest population, Christianity being the majority religion and Protestantism as its largest branch. 

Since the 1990s, the religious share of Christians has decreased, while Hinduism, Buddhism, Islam, Sikhism, and other religions have spread, mainly from immigration. In recent years, surveys show that religious Unaffiliated (people who describe themselves as atheist, agnostic, or simply “nothing in particular”) have been growing as a share of the U.S. adult population.

also read about Race and Ethnicity in Pennsylvania

Pennsylvania Religion Percentage

Christianity is the largest religion followed by 73% of the population. The largest Christian denomination in Pennsylvania is Protestants (47%) followed by Roman Catholics (24%), Jehovah’s Witnesses (1%), and Other Christian (1%).

22% of the population don’t follow or adhere to any faith or religion. Other non-Christian-based religions and faiths are followed by 6% of the population.

Other Religions include Hinduism (1%), Buddhism(1%), Jews (1%), Islam (1%), and other smaller faiths (2%).

Christianity 73%
 – Protestantism – 47%
 – Roman Catholicism – 24%
 – Mormonism -<1%
 – Eastern Orthodoxy – <1%
 – Jehovah’s Witnesses – 1%
 – Other Christian – 1%
Other Religion 6%
  Judaism -1%
  Islam -1%
  Buddhism -<1%
  Hinduism -1%
  Other religion -2%
  No religion 21%
  Don’t know 1%

Source: Pew Research Center

read about Religion in United States

Christianity in Pennsylvania

Christianity with 73% followers is the largest in Pennsylvania. All Protestant denominations accounted for 47% of the population, Catholics are 24% of the population and are the largest individual denomination if Protestantism is divided into various denominations instead of being counted as a single category. 

Of the Protestants in the state, Mainline Protestants  compose 23% of the population, Evangelical Protestants 19%, and Historically Black Protestants 5%.

Rest include Mormons,  Eastern Orthodoxy, Jehovah’s Witnesses, and other smaller denominations. 

Christianity AffiliationsPercentage
Protestantism 47%
– Mainline  Protestant– 23%
– Evangelical Protestant– 19%
– Black church– 5%
Roman Catholicism 24%
Mormonism <1%
Eastern Orthodoxy <1%
Jehovah’s Witnesses 1%
Other Christians 1%

Protestantism in Pennsylvania

Among Christians in Pennsylvania, Protestantism is the largest group comprising about 47% of the state’s population. Protestantism in the United States has branched out into several branches, denominations, and various interdenominational and related movements. 

Protestants by tradition can be further classified into three main denominations. Mainline Protestants are the largest and followed by 23% of the population, Next is Evangelical (19%) and Historically Black Church is at (5%)

Protestants Affiliation% of  population
Mainline Protestant23%
Evangelical  Protestant19%
Historically  Black Protestant5%

Protestantism is also comprised of numerous denominational families (e.g., Baptist, Methodist, and Pentecostal) that fit into one or more of the traditions. According to data from the Association of Religion Data Archives (ARDA,  the largest Protestant religious body in Pennsylvania in 2020 is as follows

Religious BodiesTraditionFamilyAdherents
Non-denominational Christian ChurchesEvangelicalOther Groups 661,832
United Methodist ChurchMainlineMethodist 448,894
Evangelical Lutheran Church in AmericaMainlineLutheran 357,938
Presbyterian Church (U.S.A.)MainlinePresbyterian/Reformed 143,051
American Baptist Churches in the U.S.A.MainlineBaptist 126,222
United Church of ChristMainlineCongregationalists (United Church of Christ) 123,598
Assemblies of God, General Council of theEvangelicalPentecostal 110,026
Amish Groups, undifferentiatedEvangelicalMennonite/Amish 72,609
Episcopal ChurchMainlineAnglican/Episcopal 67,048
National Baptist Convention, USA, Inc.BlackBaptist 64,844

read about  Protestants in the United States

Catholics in Pennsylvania

Catholic Church at 24 % of the state population is the second largest religious grouping, after Protestantism. According to the Association of Religion Data Archives (ARDA) at Pennsylvania State University, the largest religious body in Pennsylvania by adherents IN 2020 was the Roman Catholic Church with 2,845,841 adherents.

Since the 1990s, the religious share of Christians has decreased, while Hinduism, Buddhism, Islam, Sikhism, and other religions have spread, mainly from immigration. Other Religions together make up 6% of the Pennsylvania population and include Hinduism, Buddhism, Jews, Islam, and other smaller faiths.

Other Religion  

  • Judaism  -1%
  •   Islam  -1%
  •   Buddhism  -<1%
  •   Hinduism  -1%
  •   other smaller faiths  -2%

also read about Race and Ethnicity in Pennsylvania


Note: The US census does not contain questions about one’s religious affiliation. Our Article is based on surveys conducted by various institutions and agencies.

Religion in Pennsylvania 2024 | Christianity in Pennsylvania