Tshiluba Demonym Congolese Government Semi-presidential republic  -  President Joseph Kabila  -  Prime Minister Augustin Matata Ponyo Legislature Parliament  -  Upper house Senate  -  Lower house National Assembly Independence  -  from Belgium 30 June 1960 [ 1 ]   Area  -  Total 2,345,409 km 2  ( 12th ) 905,355 sq mi   -  Water (%) 4.3 Population  -