Rehoboth Beach , resort town (1990 pop. 1,234), Sussex co., SE Del., on the Atlantic coast; inc. 1873. Its industries include boat construction and printing. Settled about 1675, the town began its life as a resort in 1873 when a religious camp meeting association constructed facilities there. Now popular with vacationers, especially from Washington, D.C., and Baltimore, Rehoboth Beach is known as "the nation's summer capital." Rehoboth Bay is to the south, and Cape Henlopen State Park is to the north.