Chad, officially the Republic of Chad, is an independent state at the crossroads of North and Central Africa. The landlocked country is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon to the southwest, Nigeria to the southwest, and Niger to the west. Chad has a population of 16 million, of which 1.6 million live in the capital and largest city of N'Djamena. With a total area of around 1,284,000 km2, Chad is the fifth-largest country in Africa and the twentieth largest nation by area in the world.