Christianity in the United States
Overview
 
Christianity
Christianity
Christianity is a monotheistic religion based on the life and teachings of Jesus as presented in canonical gospels and other New Testament writings...

 is the largest and most popular religion in the United States
Religion in the United States
Religion in the United States is characterized by both a wide diversity in religious beliefs and practices, and by a high adherence level. According to recent surveys, 83 percent of Americans claim to belong to a religious denomination, 40 percent claim to attend services nearly every week or...

, with around 77% of those polled identifying themselves as Christian, as of 2009. This is down from 86% in 1990, and slightly lower than 78.6% in 2001. About 62% of those polled claim to be members of a church congregation. In the mid 1990's the United States had the largest Christian population on earth, with 224 million Christians.

Protestant
Protestantism
Protestantism is one of the three major groupings within Christianity. It is a movement that began in Germany in the early 16th century as a reaction against medieval Roman Catholic doctrines and practices, especially in regards to salvation, justification, and ecclesiology.The doctrines of the...

 denominations accounted for 51.3%, while Roman Catholicism
Roman Catholicism in the United States
The Catholic Church in the United States is part of the worldwide Catholic Church, the Christian Church in full communion with the Pope. With more than 68.5 registered million members, it is the largest single religious denomination in the United States, comprising about 22 percent of the population...

, at 23.9%, was the largest individual denomination.
 
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