The population density surfaces enabled the interpretation of the distribution of human presence in terms of the territory to be potentially occupied. The model allocates no population in areas where there is no possibility of human presence, such as in rivers, dense forests cover, sand islands, etc. Moreover, representing population in cell spaces enables monitoring of the population over the time. Even if the limits of municipalities or census tracts change, what is very common in such dynamic regions as Amazon, the distribution can be represented and compared in a cell space.