manpower; workforce; working population
Refers to the total number of people available for work, often in economic or labor statistics contexts.
The working population in this region is decreasing year by year.
The aging of the workforce is progressing.
労働力 is a broader term for labor power or labor force, often used in economics and sociology, while 稼働人口 specifically refers to the number of people actually working or available for work.
就業者数 is a statistical term for the number of employed persons, whereas 稼働人口 can include both employed and those actively seeking work.
Compound of 稼働 (operation, working) and 人口 (population). The exact historical derivation is uncertain, but the term is used in modern Japanese to refer to the working-age population or labor force.