人 口(じんこう)減 少(げんしょう)

じんこうげんしょう

noun

population decline; depopulation

1. population decline; depopulation

A decrease in the number of people living in a country, region, or area. A major social issue in Japan, where the declining birth rate and aging population are driving significant population loss.

人口(じんこう)減少(げんしょう)が進(すす)んでいる。

Population decline is progressing.

地方(ちほう)の人口(じんこう)減少(げんしょう)が深刻(しんこく)だ。

Population decline in rural areas is serious.

日本(にほん)は人口(じんこう)減少(げんしょう)社会(しゃかい)に入(はい)ったと言(い)われている。

Japan is said to have entered an era of population decline.

人口(じんこう)減少(げんしょう)に歯止(はど)めをかけるための対策(たいさく)が急(いそ)がれている。

Measures to halt population decline are urgently needed.

One of the most discussed social issues in modern Japan. Japan's population peaked around 2008 and has been declining since, driven by a low birth rate (少子化(しょうしか)) and an aging population (高齢化(こうれいか)). This term appears constantly in news, policy discussions, and social commentary.

Common collocations

人口(じんこう)減少(げんしょう)社会(しゃかい): depopulating society
人口(じんこう)減少(げんしょう)問題(もんだい): depopulation problem
人口(じんこう)減少(げんしょう)に歯止(はど)めをかける: to put a stop to population decline
急速(きゅうそく)な人口(じんこう)減少(げんしょう): rapid population decline
人口(じんこう)減少(げんしょう)対策(たいさく): measures against population decline

Related words

少子化(しょうしか): declining birth rate — one of the main drivers of population decline
高齢化(こうれいか): population aging — the other major driver
過疎化(かそか): depopulation of rural areas — specific to the emptying of countryside communities
人口(じんこう)増加(ぞうか): population growth — the opposite trend

Related Words

Related: 少子化(しょうしか) (declining birth rate)

Related: 高齢化(こうれいか) (population aging)

Related: 過疎化(かそか) (depopulation of rural areas)

general

Added 2026.4.19 1:24 · Revised 2026.9.2 13:02

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