West Palm Beach is the county seat of Palm Beach County . Southern Boulevard ( signed FL 80\/US 98 ) , which runs east-west through central Palm Beach County , is a partial freeway from Interstate 95 in West Palm Beach to US 441\/FL 7 in Wellington and Royal Palm Beach . In the late 1980s , there were plans to construct an 11.5 m toll freeway from Royal Palm Beach to downtown West Palm Beach .