Masi-Manimba is a town in Kwilu Province, Democratic Republic of the Congo, the headquarters of the Masi-Manimba Territory. As of 2012 t…Masi-Manimba is a town in Kwilu Province, Democratic Republic of the Congo, the headquarters of the Masi-Manimba Territory. As of 2012 the population was estimated to be 31,802. The town lies on the Lukula River, a tributary of the Kwilu River. It is on the road between Kenge to the west and Kikwit to the east. Masi-Manimba is served by Masi-Manimba Airport, with a runway length of 4,100 feet and an altitude of 1,952 feet.