Japan's overall population is shrinking, but the experience is wildly uneven. A compact set of metropolitan municipalities still grows while much of the country contracts. This guide shows that divergence in the data on this site.
A shrinking nation, a growing core
Nationally, the population peaked years ago and the 2050 projection points sharply down. Yet wards and suburbs across greater Tokyo — and selected areas around Nagoya, Osaka and Fukuoka — continue to gain residents through net migration, even as births fall. The 2025 Census preliminary figures reaffirm this pattern.
The population growth ranking is dominated by Tokyo-area municipalities; the decline ranking is dominated by remote towns and villages. Net migration ties the two together: people are still concentrating into a small number of places.
Why it matters for reading any single town
Because the averages hide everything. 'Japan is depopulating' is true nationally and false for specific municipalities. Always check the individual municipality's trend, net migration and projection rather than relying on the national headline.
This guide explains how to read official statistics and does not constitute legal, tax or investment advice. For decisions on purchasing property in Japan, consult a qualified professional.
Following the divergence on this site
Compare a high-growth ward with a fast-declining village side by side using the rankings, then open each municipality page to see the full trajectory and the akiya and rent context.
Explore the data
FAQ
- Is all of Tokyo growing?
- Most central and many suburban municipalities are, driven by net migration, but not uniformly — always check the specific municipality.
- Will regional decline reverse?
- The IPSS projection to 2050 does not foresee a broad reversal, though individual towns can buck the trend, as the projection-vs-actual gap shows.
- Where can I see the divergence quickly?
- Compare the population growth ranking and the population decline ranking, then open individual municipality pages.
Operator and full source list: About chiiki-data.