Mbuji-Mayi serves as the capital of Kasai-Oriental Province in the south-central Democratic Republic of Congo. It is the third largest city in the country, following the capital Kinshasa and second largest city Lubumbashi but ahead of Kisangani and Kananga, though the exact population isn't known. Estimates ranged from a 2010 CIA Factbook estimated population of 1,480,000 to as many as 3,500,000 estimated by the United Nations in 2008.Mbuji-Mayi lies in Luba country on the Sankuru River. The name Mbuji-Mayi comes from the local language, Tshiluba, and translates as "Goat-Water," a name deriving from the great number of goats in the region and the city's location on the Sankuru, making it a prime watering spot. Despite its large population, the city remains remote, having little connection to surrounding provinces or to Kinshasa and Lubumbashi. Air travel is provided through the Mbuji Mayi Airport.