Broward County is a county in the southeastern part of Florida, located in the Miami metropolitan area. It is Florida's second-most populous county after Miami-Dade County and the 17th-most populous in the United States, with 1,944,375 residents as of the 2020 census. Its county seat and most populous city is Fort Lauderdale, which had a population of 182,760 …Broward County is a county in the southeastern part of Florida, located in the Miami metropolitan area. It is Florida's second-most populous county after Miami-Dade County and the 17th-most populous in the United States, with 1,944,375 residents as of the 2020 census. Its county seat and most populous city is Fort Lauderdale, which had a population of 182,760 as of 2020.