Palm Beach International Airport (PBI)
Palmtran bus route 44 provides service between PBI and West Palm Intermodal Transit Center. Connections can be made at the Transit Center to buses serving most of Palm County. Google Maps does not have maps for Palm Beach Transit. The map below is from the transit web site.
The transit Center is also a rail station for Tri-Rail with service to as far south as Miami.
Go to Palm Beach Google Maps for an area map.