population

noun [集合/集体]（地区、国家等的）人口，人口数量；（某领域的）生物，族群，人口；（统计）总体，母体；（天文）星族；（物理）布居数

If you refer to a particular type of population in a country or area, you are referring to all the people or animals of that type there. ^{(某种) 人群; 种群}