Lautaro is a city and commune of the Cautín Province in Chile's Araucanía Region. The area is named in honor of Lautaro, Mapuche leader duri…Lautaro is a city and commune of the Cautín Province in Chile's Araucanía Region. The area is named in honor of Lautaro, Mapuche leader during the War of Arauco. According to the 2002 census of the National Statistics Institute, Lautaro spans an area of 901.1 km² and has 32,218 inhabitants. Of these, 21,071 lived in urban areas and 11,147 in rural areas. Between the 1992 and 2002 censuses, the population grew by 12.2%.