Population

A population is the number of living people that live together in the same place.^[1] A city's population is the number of people living in that city. These people are called inhabitants or residents. The population includes all individuals that live in that certain area. The world population was estimated to have reached 7.5 billion in April 2017. Asia is the most populous continent, with its 4.3 billion inhabitants being 60% of the world population. The most populous country is China with 1.4 billion people.

Population density is the average number of people in a place. Urban areas such as big cities have a high population density. People living there lives close to each other. In areas with a low population density, people usually live far away from each other, such as in rural areas out in the countryside.

Usually population refers to the number of humans in a certain area. The maximum population that can be supported in an area is called the carrying capacity.

1. ↑ Holt Rinehart & Winston (2001). Earth Science. Austin, Texas: Holt, Rinehart and Winston. ISBN 0-03-055667-8.