Guinea vs Nigeria: What the Numbers Mean

Guinea has a population of 15,099,727 and is growing at 0.87% per year.Nigeria has a population of 230,800,000 and is growing at 2.41% per year. The difference between them is 215,700,273 people, with Nigeria in the lead.

Population is more than a headcount. Guinea has a density of 61 people per km² across 245,857 km², while Nigeria has a density of 250 people per km² across 923,768 km². These figures shape how each country manages housing, infrastructure, and resources. For how these numbers are computed, see our Methodology page.