Dwellings in Kibera, Nairobi Kenya (ca. 2008) Kibera (Nubian: Forest or Jungle) is a division of Nairobi Area, Kenya, and neighbourhood of the city of Nairobi, 5 kilometres (3.1 mi) from the city centre. Kibera is the largest slum in Nairobi, and the largest urban slum in Africa. The 2009 Kenya Population and Housing Census reports Kibera's population as 170,070, contrary to previous estimates of one or two million people.