The Democratic Republic of the Congo (//; French: République démocratique du Congo [kɔ̃ɡo]), also known as DR Congo, the DRC, Congo-Kinshasa or simply the Congo, is a country located in Central Africa. It is sometimes referred to by its former name of Zaire, which was its official name between 1971 and 1997. The DRC borders the Central African Republic and South Sudan to the north; Uganda, Rwanda, Burundi and Tanzania to the east; Zambia to the south; Angola to the southwest; and the Republic of the Congo and the Atlantic Ocean to the west. It is the second-largest country in Africa after Algeria, (the largest in Sub-Saharan Africa) by area and the 11th-largest in the world. With a population of over 78 million, the Democratic Republic of the Congo is the most populated officially Francophone country, the fourth-most-populated country in Africa and the 17th-most-populated country in the world.