La Granja is a commune of Chile located in Santiago Province, Santiago Metropolitan Region. According to the 2002 census of the National St…La Granja is a commune of Chile located in Santiago Province, Santiago Metropolitan Region. According to the 2002 census of the National Statistics Institute, La Granja spans an area of 10.1 km² and has 132,520 inhabitants, and the commune is an entirely urban area. The population fell by 0.6% between the 1992 and 2002 censuses. The 2006 projected population was 129,707.