noun
population distribution
Refers to how people are spread across a geographic area. Common in geography, demographics, and urban planning contexts.
この地域の人口分布は非常に不均等だ。
The population distribution in this region is very uneven.
人口分布の変化が都市計画に影響を与えている。
Changes in population distribution are affecting urban planning.
人口密度 is population density (people per unit area), while 人口分布 is the broader pattern of where people live.
Compound of 人口 (population) and 分布 (distribution).