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. The population was 117,415 at the 2020 census. West Palm Beach is a principal city of the Miami metropolitan area, which was home to 6,138,333 people in 2020. It is the oldest incorporated municipality in the South Florida area, incorporated as a city two years before Miami in November 1894. West Palm Beach is located approximately 68 miles (109 km) north of Downtown Miami.