The 10 Largest Slums in Africa by Population Africa's urbanization has led to the growth of slums, posing significant challenges to residents, governments, and economies. Here's a look at the continent's 10 largest slums. 1. Kibera, Kenya: 700,000 Kibera, located in Nairobi, is Africa's largest slum. Lack of basic services, poverty, and overcrowding characterize this sprawling settlement. 2. Mathare, Kenya: 500,000 Another Nairobi slum, Mathare, struggles with inadequate housing, sanitation, and