Gabon has a population that is estimated at 1,545,255. Historical and environmental factors caused Gabon's population to decline between 1900 and 1940.Gabon has one of the lowest population densities of any country in Africa, and the fourth highest Human Development Index in Sub-Saharan Africa.
Libreville is the capital and largest city of Gabon, in west central Africa. The city is a port on the Komo River, near the Gulf of Guinea, and a trade center for a timber region. As of 2012 it had a population of 797 003.
Most of the health services of Gabon are public, but there are some private institutions, of which the best known is the hospital established in 1913 in Lambaréné by Albert Schweitzer. The hospital is now partially subsidized by the Gabonese government.