Puerto Rico senatorial districts  has eight names, one of which is San Juan (named for John the Baptist) with a population of 462,035.
462,035 II - Bayamon III - Arecibo IV - Mayaguez-Aguadilla V - Ponce VI - Guayama VII - Humacao VIII - Carolina In 1521, the newer settlement was given its formal name: Puerto Rico de San Juan Bautista. San Juan Bautista is the Spanish-language name of Saint John the Baptist. 
