The subspecies of gorillas live in different parts of Africa. The main populations are  found in low altitudes in Cameroon, Central African Republic, Gabon, Congo, and Equatorial Guinea (Western lowland Gorilla gorilla); eastern Democratic Republic of Congo (Eastern lowland Gorilla grueri); and at high altitudes in DR Congo, Rwanda and Uganda (Mountain gorilla gorilla beringei).

The world’s gorilla population has decreased significantly in the last 50 years. The mountain gorilla remains at extreme risk of extinction with only approximately 900 remaining. It is estimated that only around 2500 eastern lowland gorillas remain. A scientific estimate of total remaining wild gorilla population in Africa is only 50,000. Most of these are western lowland gorillas.