Urbanisation is spreading across Africa at great speed. Projections suggest that more than half of the total population will live in urban areas by 2050. Urbanisation in Nigeria is happening at a particularly astonishing rate. The population density of urban dwellers in Nigeria is growing at an annual rate of 50 per square kilometre and it's expected to rise to 450.9 per square kilometre by 2050.
These urban dwellers include a large number of people over the age of 60. The number of old people on the continent is expected to rise to 67 million by 2025, up from an estimated 43 million in 2010. Nigeria will experience an exponential increase the number of older people.
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