The DC metropolitan area is populated with places of worship. We Love DC talks about the ten mile "Highway to Heaven" along New Hampshire Avenue between the Beltway and Sandy Spring Road, so called because of the number and diversity of houses of worship along that ten mile corridor.
It's fair to say that the number of people in the DC area who believe in a supreme being far outnumber those who don't. Yet non-belief is growing in both interest and numbers, especially among people in their 20's: An estimated 25 to 30 percent of young Americans claim no religious affiliation. Interest in books that discuss the problems with religion, such as Richard Dawkin's The God Delusion