Titusville is a city in Brevard County, Florida, United States. The population was 40,670 at the 2000 census. According to the U.S. Census Bureau's 2004 estimates, the city had a population of 42,614. It is the county seat of Brevard County. Called "Space City, USA," Titusville is a popular resort area situated near the Kennedy Space Center and Canaveral National Seashore.