West Palm Beach is a city in and the county seat of Palm Beach County, Florida, United States. It is located immediately to the west of the adjacent Palm Beach, which is situated on a barrier island across the Lake Worth Lagoon. It is the largest city in Palm Beach County, and at the time of the 2020 census, its population was 117,415. West Palm Beach is a principal city of the Miami metropolitan area, which was home to 6.14 million people in 2020.