Villa Tunari Municipality is the third municipal section of the Chapare Province in the Cochabamba Department, Bolivia. Its seat is Villa Tunari. The population grew from 52,886 to 71,146 during 2001 to 2012 according to the census. Only 8,692 of the population are urban and are concentrated in the small towns of Villa Tunari (3.213), Eterazama (3,359) and Villa 14 the Septiembre (2,123).