Which of the 50 states has the most religious population? Since there are many ways to define "religious," there is no single answer to this question. But to give a sense of how the states stack up, the Pew Research Center's Forum on Religion & Public Life used polling data to rank them on four measures. 

According to the U.S. Religious Landscape Survey, conducted by the Pew Research Center's Forum on Religion & Public Life, 5% of American adults say they do not believe in God or a universal spirit, but only about a quarter (24%) of these nonbelievers actually call themselves atheists.

An analysis of data from the U.S. Religious Landscape Survey, conducted by the Pew Research Center's Forum on Religion & Public Life, finds that women are more religious than men on a variety of measures.

A new analysis by the Pew Forum finds that African-Americans are markedly more religious on a variety of measures than the U.S. population as a whole.

A 2007 survey by the Pew Research Center's Global Attitudes Project found that a majority of Americans say it is necessary to believe in God in order to be moral and have good values.