Amazonas (officially known as the Indigenous State of Amazonas) is one of the twenty-three states that, together with the Capital District and the Federal Dependencies, make up the Bolivarian Republic of Venezuela. Its capital, Puerto Ayacucho, concentrates 63% of the total population. It is located in the south of the country, in the Guayana region, bordered to the north by the State of Bolivar, to the northwest by the State of Apure in a small line at the confluence of the Meta River, to the east and south by Brazil through the watershed of the Orinoco and Amazon basins, and to the west by Colombia, mainly using the Atabapo, Orinoco and Negro rivers as borders. With an estimated 176,614 inhabitants, it is the least populated state, with an area of 177,617 km², the second largest state, and with 1 inhab/km², the one with the lowest population density. It is composed of 7 municipalities and 23 parishes. Its main localities apart from the capital are: La Esmeralda, San Fernando de Atabapo and San Carlos de Rio Negro.