Crystal River is a city in Citrus County, Florida, United States. The population was 3,485 in the 2000 census. (4,044 in 1990). According to the U. S Census estimates of 2005, the city had a population of 3,539. http://www. census. gov/popest/cities/tables/SUB-EST2005-04-12. csv The city was incorporated in 1903 and is the self professed "Home of the Manatee". http://www. crystalriverfl. com/history.