Titusville (tĪˈtəsvĭl) [key], city (1990 pop. 39,394), seat of Brevard co., E Fla., on Indian River (a lagoon); inc. 1886. It is a growing, regional trade center. The construction in the 1950s of the space center on nearby Cape Canaveral brought tourism and commercial enterprises to the "Space Coast," but aerospace no longer thoroughly dominates the economy. The Astronaut Hall of Fame is there.