Lagos dominates the region as its largest metropolis with 9M residents, significantly larger than other cities. Nigeria dominates the urban landscape with multiple major cities, including Kano (3.6M), Ibadan (3.6M), and Kaduna (1.6M).
Major capital cities form important regional centers: Abidjan (3.7M) in Ivory Coast, Dakar (2.5M) in Senegal, and Accra (2M) in Ghana. Conakry in Guinea maintains 1.8M residents.
Several secondary cities have populations exceeding 1 million, including Kumasi (1.5M) in Ghana, Bamako (1.3M) in Mali, and Ouagadougou (1.1M) in Burkina Faso.