Altamira Municipality encompasses the Altamira city and district, the seat of local government, whose majority population lives in urban area, and nine other mostly rural districts (most of those covered by the Amazon rainforest), whose urban populations are minorities, and live in inhabited areas spaced by tens or hundreds of kilometers. According to the 2010 Brazilian National Census the municipality has 99,075 inhabitants, making a density of only 0.65 inhabitants per square kilometer at the same year. It is home to hundreds of indigenous communities and environmental protection areas. The infamous Belo Monte Dam, a hydroelectric dam complex is currently under construction in the area of the Xingu River in the municipality.