At the same time, evangelical and Pentecostal groups are doing just the opposite. They're expanding their footprint in what statistics show are America's four least religious states: Vermont, New Hampshire, Maine, and Massachusetts. And because more and more Americans today identify with no particular religion, what happens in this land of spiritual free agency could offer insights into the future of religion across the country. The recent changes in New England have been significant:
•Between 2000 and 2010, the Catholic church has lost 28 percent of its members in New Hampshire and 33 percent in Maine. It has closed at least 69 parishes (25 percent) in greater Boston.
•Over the same period, the Southern Baptist Convention (SBC) established 118 new churches in northern New England, according to the 2010 Religion Census. About 50 of them inhabit buildings once owned by mainline churches.
•Other denominations are growing, too, including Pentecostals: Assemblies of God (11 new churches in Massachusetts) and International Church of the Foursquare Gospel (13 new churches in Massachusetts and Maine). The Seventh-day Adventists, an evangelical group, opened 55 new churches in Massachusetts, New Hampshire, and Maine between 2000 and 2010, according to the Religion Census. Muslims and Mormons are experiencing membership gains as well.