A closer look at Catholics in Washington, New York and Philadelphia

On his first papal trip to the U.S., Pope Francis will visit three Northeastern cities that are within a few hundred miles of each other. But while New York City, Philadelphia and Washington, D.C., may be geographically close, their Catholic populations look different from one another in several ways, according to data from the 2014 Religious Landscape Study. (See full text at Pew Research Center's website)