The city of Rio Sono is located in eastern Tocantins in mesoregion by integrating the 7thAdministrative Region of the State, in northeastern. Their lands are composed of savannah, mountains, forests productive. The city has the name of Rio Sono because situating over the homonymous river, which traverses the city and belongs to the Tocantins basin. His business education was given from the State Law No. 9158 of 1982 that created the municipality of Rio Sono, separated from the Municipality of Lizarda. The official area of Rio Sono is currently 6.355km² and in the 2010 census, listed with 6.254 inhabitants, with a population growth of around 8.95% compared to the census of 2000.
