The Middle Atlantic region's religious diversity began in the 17th century and continues today. European religious minorities recognized the need to tolerate other faiths if they themselves were to be tolerated. From Quaker Pennsylvania to English Catholic Maryland to New York with no state religion, the Middle Atlantic colonies inspired the framers of the Constitution to keep a wall of separation between religion and government. But the religious diversity of the region is tempered by the many religious institutions that have centers in the area, especially in Washington, DC and New York City. The diversity here is due less to fluid identities and emerging religions than to many established religious institutions recognizing and tolerating each other. Protestant, Catholic and Jewish traditions function alongside each other here and they make room for the religions of new immigrants.

Contributions by: Vivian Klaff, James Fisher, Randall Balmer, Lawrence Grossman, James Hudnut-Beumler, Wendy Cadge