Lagos
Lagos State, Nigeria’s largest city, is located in the south-western region of Nigeria, and encompasses an area of 3,577 km2. Lagos sits on a coastal plain characterized by flat terrain at an average elevation of 15 m above sea level. Water bodies and wetlands cover over 40% of the total land area. The population of Lagos State was 17.5 million in 2006 with a growth rate of 3.2%. It is one of the fastest growing cities in the world and in 2015 the population was estimated at 23.3 million. The city has 57 local government administrative units.