- 1 [countable, uncountable] all the people who live in a particular area, city, or country; the total number of people who live there One third of the world's population consumes two thirds of the world's resources. The entire population of the town was at the meeting. countries with aging populations Muslims make up 55% of the population. an increase in population areas of dense/sparse population (= where many/not many people live) The population is increasing at about 6% per year. Oregon has a population of nearly 4 million. to control population growth population density
- 2[countable] a particular group of people or animals living in a particular area the adult/working/rural, etc. population of the country The prison population (= the number of people in prison) is continuing to rise. Oil spillages are disastrous for fish populations.
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