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Rondônia (Brazilian Portuguese: [ʁõˈdonjɐ] (listen)) is one of the 26 states of Brazil, located in the northern subdivision of the country (central-western part). To the west is a short border with the state of Acre, to the north is the state of Amazonas, in the east is Mato Grosso, and in the south and southwest is Bolivia. Rondônia has a population of 1,755,000 as of 2014. It is the fifth least populated state. Its capital and largest city is Porto Velho. The state was named after Cândido Rondon, who explored the north of the country during the 1910s. The state, which is home to 0,8% of the Brazilian population, is responsible for 0,6% of the Brazilian GDP.

Beni Department Pando Department La Paz Department (Bolivia) Santa Cruz Department (Bolivia) Cochabamba Department Amazonas Madre de Dios Acre Puno Mato Grosso