The Demographics of Asia refers to the human population of Asia. The continent covers 29.4% of the Earth's land area and has a population of over 4 billion - accounting for about 56% of the world population. Together, China's and India's populations are estimated to be around 2.5 billion people.
Ethnicity or ethnic group is a socially defined category based on common culture or nationality. Ethnicity can, but does not have to, include common ancestry, appearance, cuisine, dressing style, heritage, history, language or dialect, religion, symbols, traditions, or other cultural factor. Ethnic identity is constantly reinforced through common characteristics which set the group apart from other groups.