It is the second largest country in Africa by area and the eleventh largest in the world. With a population of over 75 million, the Democratic Republic of the Congo is the most populated officially Francophone country, the fourth most populated nation in Africa and the nineteenth most populated country in the world.t is the second largest country in Africa by area and the eleventh largest in the world. With a population of over 75 million, the Democratic Republic of the Congo is the most populated officially Francophone country, the fourth most populated nation in Africa and the nineteenth most populated country in the world.