DictionarydepopulationPopulation reduction
noun

depopulation

dee-pop-yuh-LAY-shuhn/ˌdiːˌpɑːpjuˈleɪʃn/

A reduction in the number of inhabitants of a place.

Rural depopulation leaves many small towns with empty homes and schools.

Two comparative views of the same village show many occupied homes before and numerous empty boarded houses afterward, no destroyed bodies.
Etymology

Latin depopulatio meant 'laying waste' or 'pillaging.' Early English may also have referred to destroying or expelling inhabitants, connecting that devastation with the modern sense of a sharp loss of residents.

In context

Highland Radio Ireland155:57
we left here in our Millions some never to return there was a huge depopulation of this country
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More examples

  • The factory closure accelerated the town's depopulation.
  • Affordable housing could help slow depopulation in the region.
  • War and disease caused widespread depopulation.

Forms

depopulation

depopulate verb — Reduce or remove a place's inhabitants.

Similar words

decline
Can describe any decrease, not specifically fewer inhabitants.
exodus
Emphasizes people leaving, rather than the resulting decrease in population.