Faith of United States

Among developed countries, the US is one of the most religious in terms of its demographics. According to a 2002 study by the Pew Global Attitudes Project, the US was the only developed nation in the survey where a majority of citizens reported that religion played a "very important" role in their lives, an attitude similar to that found in its neighbors in Latin America.
Several of the original Thirteen Colonies were established by English and Irish settlers who wished to practice their own religion without discrimination or persecution as religious extremists in Europe: Pennsylvania was established by Quakers, Maryland by Roman Catholics and the Massachusetts Bay Colony by Puritans. Nine of the thirteen colonies had official public religions. Yet by the time of the Philadelphia Convention of 1787, the United States became one of the first countries in the world to enact freedom of religion by way of a codified separation of church and state.
Modeling the provisions concerning religion within the Virginia Statute for Religious Freedom, the framers of the United States Constitution rejected any religious test for office, and the First Amendment specifically denied the central government any power to enact any law respecting either an establishment of religion, or prohibiting its free exercise. In following decades, the animating spirit behind the constitution's Establishment Clause led to the disestablishment of the official religions within the member states. The framers were mainly influenced by secular, Enlightenment ideals, but they also considered the pragmatic concerns of minority religious groups who did not want to be under the power or influence of a state religion that did not represent them.[3] Thomas Jefferson, author of the Declaration of Independence said "The priest has been hostile to liberty. He is always in alliance with the despot."

• Religious Statistics for the United States
  It should be noted the following information is a ballpark estimate as actual statistics constantly vary.
  According to the CIA,[5] the following is the order of religious preferences in the United States:
  Christian: (78.5%)
  Protestant (51.3%)
  Roman Catholic (23.9%)
  Mormon (1.7%)
  other Christian (1.6%)
  unaffiliated (12.1%)
  none (4%)
  other or unspecified (2.5%)
  Jewish (1.7%)
  Buddhist (0.7%)
  Muslim (0.6%)