Important organizations on the island include the Puerto Rico Medical Association, Puerto Rico Manufacturers' Association, and Puerto Rico Bar Association. Also maintaining headquarters in Puerto Rico are the Association of Island Marine Laboratories of the Caribbean, Puerto Rico Rum Producers Association, Caribbean Hotel Association, and Caribbean Studies Association.
US-based agencies such as the National Puerto Rican Forum and the Puerto Rican Community Development Project assist Puerto Ricans living on the mainland. "Hometown clubs" consisting of "absent sons" (hilos ausentes) of various Puerto Rican towns are a typical feature of the barrios in New York and other cities in the continental US.