A federal appeals court recently overturned a lower court ruling that had declared the National Day of Prayer to be unconstitutional. The day of prayer, established by Congress in 1952, occurs annually on the first Thursday in May, which this year falls on May 5.

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. 

The Pew Forum's U.S. Religious Landscape Survey finds that Hispanic evangelicals, like other evangelicals, are more likely to pray every day than the population overall. Hispanic evangelicals are also more likely to pray daily than Hispanics who belong to other major religious groups.

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.