過疎化

• Reading: かそか
• Romaji: kasoka
• Kanji breakdown: 過 (ka) — excess, surpass; 疎 (so) — sparse, scattered, neglect; 化 (ka) — -ification, transformation
• Pronunciation: /ka.so.ka/

Meaning

Depopulation; the process by which a region loses population, typically through outmigration to urban areas, resulting in sparse settlements and declining services.

Composed of 過疎 (underpopulation/sparse settlement, from 過 meaning excessively and 疎 meaning sparse) and 化 (the suffix meaning -ification/-isation). A major social issue in Japan, where rural areas have experienced sustained population decline as young people move to cities. Consequences include school closures, reduced local government capacity, and abandonment of farmland and traditional communities.

Examples

1. 山間部の集落では過疎化が深刻で、限界集落と呼ばれる地域が増え続けている。 Depopulation is severe in mountain communities, and the number of areas known as marginal villages continues to grow.
2. 過疎化を食い止めるため、自治体が移住促進策や地方創生事業を積極的に展開している。 To stem depopulation, local authorities are actively implementing migration promotion schemes and regional revitalisation projects.
3. 若い世代が都市に流出し続ける限り、地方の過疎化は解決が難しいと専門家は指摘する。 As long as young people continue to leave for the cities, experts point out that it will be difficult to resolve rural depopulation.

Usage Guide

Context: society, rural affairs, demographics, politics, policy

Tone: neutral

Origin & History

過疎 (kaso, underpopulation, from 過 meaning excessive and 疎 meaning sparse) + 化 (ka, -ification). 過疎 became a recognised social policy term in Japan in the 1960s with the enactment of special legislation addressing depopulated areas.

Cultural Context

Era: Postwar–Contemporary

Generation: Adults

Social background: General