Where does overpopulation occur?

Overpopulation occurs when the number of those born exceeds that of those who die over a long period of time. In human societies, overpopulation occurs in regions where people traditionally have very large families and at least adequate healthcare. Older civilizations, such as India and China, tend to have large populations because they've been around for a long time, they've been relatively stable and progressive (with healthcare at least), and their aggregate childbirths exceed the aggregate death rate.