Quintero is a Chilean city and commune in Valparaíso Province, Valparaíso Region. The commune spans an area of 147.5 km2 (57 sq mi). The name of the city comes from Alonso Quintero, the Spanish navigator who discovered the bay in 1536 when he arrived on the ship Santiaguillo. According to the 2002 census of the National Statistics Institute, Quintero had 21,174 inhabitants (10,390 men and 10,784 women). Of these, 18,719 (88.4%) lived in urban areas and 2,455 (11.6%) in rural areas. The population grew by 19% (3,378 persons) between the 1992 and 2002 censuses. The demonym for a man from Quintero is Quinterano and Quinterana for a woman.