In Japan, suburbs aren't becoming poor because of bad neighborhoods; they are literally rotting from the inside.
April 15, 2026
Original Paper
Suburban Poverty Risk in Planned New Towns in Japan: Socio-Spatial Transformation in a Shrinking Conurbation
SSRN · 6571121
The Takeaway
In the West, we think of suburban poverty as people 'moving in' from the city. In Japan, it’s the opposite: people aren't moving in, they are just failing to move out. These 'planned new towns' are suffering from 'internal asset depletion' as the original residents age and lose their savings, with no young people to replace them. It’s a decay-from-within model where poverty is a biological process of a shrinking population rather than a social process of migration. It means a perfect neighborhood can turn into a poverty trap simply by staying exactly the same for too long.
From the abstract
Suburban poverty has been widely examined in growing metropolitan regions, where it is often linked to displacement, immigration, and rental market restructuring. Yet far less attention has been paid to how suburban poverty unfolds in shrinking urban contexts and how policy frameworks respond to such transformations. This study investigates the emergence and spatial differentiation of suburban poverty risk in postwar planned new towns within the Kyoto–Osaka–Kobe conurbation, a major Japanese urb