With more than 3 million adherents in 2020, Los Angeles County is home to the largest Catholic population in the United States. Cook County, Illinois (home of Chicago), is home to the second largest Catholic population in the nation with 1.5 million adherents.
Los Angeles County was home to more than 97,000 Buddhist adherents in 2020, making up nine percent of all Buddhist adherents in the nation. The county's Buddhist community is the largest concentration in the United States.
Adherents are members and their children and others who regularly attend services.
|Church of Jesus Christ of Latter-day Saints, The||Latter-day Saints||198||124,938|
|Southern Baptist Convention||Evangelical Protestant||588||118,072|
|Jehovah's Witnesses||Jehovah's Witnesses||461||116,034|
|Assemblies of God||Evangelical Protestant||297||103,929|
|Church of God in Christ||Black Protestant||122||77,607|
|Foursquare Gospel, International Church of the||Evangelical Protestant||184||74,822|
|National Missionary Baptist Convention||Black Protestant||164||55,116|
|African Methodist Episcopal Church||Black Protestant||32||41,598|
|Seventh-day Adventist Church||Evangelical Protestant||136||40,381|
|United Methodist Church, The||Mainline Protestant||147||37,515|