This official designation encompasses all seven states of the North Region (Acre, Amapá, Amazonas, Pará, Rondônia, Roraima and Tocantins), as well as most of Mato Grosso in the Center-West Region and the western part of Maranhão in the Northeast Region. Amazônia Legal is a 5,016,136.3 km2 region with around 24 million inhabitants; in other words 59% of the geographic territory of Brazil is part of Amazônia Legal, but only 12.34% of the Brazilian population lives there. The administrative unit was initially established by Federal Law No. 5.173 (Art. 2).