The municipality has many nicknames: La Villa de Sotomayor ("Sotomayor's Villa") is a reference to one of the town's Spanish founders, Cristóbal de Sotomayor; La Ciudad del Descubrimiento ("City of the Discovery") is a reference to the possibility that Christopher Columbus first landed in Puerto Rico at what is today the municipality's territory; El Pueblo Playero translates to "the beach town" and La Ciudad del Vaticano ("the Vatican's City") which references the town's early importance for Catholicism in the island.