West Palm Beach is a city in and the county seat of Palm Beach County, Florida, United States. It is one of the three main cities in South Florida. The population was 100,343 (revised) at the 2010 census. The University of Florida Bureau of Economic and Business Research (BEBR) estimates a 2016 population of 108,896, a 7.9% increase from 2010. It is the oldest municipality in the Miami metropolitan area, having been incorporated as a city two years before Miami in November 1894.