The Ministry of Public Health in Cameroon is responsible for the maintenance of all public health services. Many missionaries maintain health and leprosy centers.
According to the 2010 revison of the World Population Prospects the total population was 19 599 000 in 2010, compared to only 4 466 000 in 1950. The proportion of children below the age of 15 in 2010 was 40.6%, 55.9% was between 15 and 65 years of age, while 3.5% was 65 years or older.
At 475,440 km2 (183,570 sq mi), Cameroon is the world's 54th largest country. It is slightly larger than the nation of Sweden and state of California. It is comparable in size to Papua New Guinea. Cameroon's landmass is 472,710 km2 (182,510 sq mi), with 2,730 km2 (1,050 sq mi) of water.