The Federal Republic of Nigeria is a federal republic in West Africa, bordering Niger in the north, Chad in the northeast, Cameroon in the east, and Benin in the west.

Nigeria is often referred to as the "Giant of Africa", owing to its large population and economy. With more than 199 million inhabitants, Nigeria is the most populous country in Africa and the seventh most populous country in the world. Nigeria has the third-largest youth population in the world, after India and China, with more than 90 million of its population under age 18. As of 2017, Nigeria had the fastest growing population of the 10 most populous countries worldwide.

Nigeria also has the world's largest number of extremely poor people, with 87 million. Today, Nigeria ranks 157 out of 189 countries in the UN Human Development Index, which measures indicators such as health and inequality. Life expectancy is still only 54 years, although that’s an improvement from 46 years in 1999.

About 80 percent of people who earn an income are active in the informal sector or have what the UN calls “vulnerable employment,” work that lacks social security or guarantees any kind of rights. The number of destitute in Nigeria is believed to be growing by six people every minute, according to a recent paper from The Brookings Institution. The UN expects Nigeria's population to more than double to 410 million by 2050, potentially swelling the ranks of the poor.

Will Nigeria's population exceed 400 million before 2050?

This question will resolve as Yes if the total population of Nigeria is at least 400 million people at any point before January 1, 2050, according to the United Nations, World Health Organisation, competent statistical authorities in Nigeria or similarly credible data. The data need not be available on January 1, 2050; but it must provide population figures for that date or earlier.