Hialeah Gardens is a city in Miami-Dade County, Florida, United States. The population was 19,297 at the 2000 census. As of 2005, the population recorded by the U.S. Census Bureau is 19,930,https://www.census.gov/popest/cities/tables/SUB-EST2005-04-12.xls with a population density of 7987 (...) (from Wikipedia)