Nigeria is the most populous country in Africa, with an estimated population of 242.4 million people in 2026, according to Worldometer figures cited by multiple outlets. The estimate places Nigeria ahead of Ethiopia, which is listed at 138.9 million, and Egypt at 120.1 million, which take the second and third spots respectively. Both sources present the ranking as part of a wider list of Africa’s 10 most populous countries for 2026. While the articles focus mainly on the headline ranking, they also describe broader demographic context: Africa is projected to remain the world’s fastest-growing region, with growth driven by youthful population structures, relatively high fertility rates, and improved healthcare. One outlet adds that Nigeria’s last official census took place in 2006 and that subsequent population figures are based on projections, including an estimated annual growth rate referenced from the World Bank. The same outlet also notes Nigeria’s median age and fertility rate as factors underpinning continued expansion. Overall, the reported estimates indicate sustained population growth across Africa, with Nigeria continuing to be a central contributor.