Cocoa, city (1990 pop. 17,722), Brevard co., E Fla., on the Indian River (a lagoon), a segment of the Intracoastal Waterway; inc. 1895. It is a tourist and arts center in a region where citrus fruits are grown. An 8-mi (12.9 km) causeway leads from the city over Indian River to Merritt Island, Cocoa Beach, and Cape Canaveral. Patrick Air Force Base is nearby.