The New York Times published the numbers this week. Japan lost 3.1 million people in the past five years. The country’s population peaked at 128 million in 2008. It is now roughly the same size it was in 1989. By 2070, current projections put it at 87 million — a country smaller than it was in the early postwar period, running an economy, an infrastructure system, and a pension architecture designed for a population that no longer exists.

The map is stark. 45 of Japan’s 47 prefectures reported population decreases in 2025. Hokkaido lost 239,000 people in five years. Akita, Fukushima, Shimane — the regional prefectures are emptying at an accelerating rate. Okinawa, Japan’s most economically peripheral prefecture, has the country’s highest fertility rate. The place where people are still having children is the place the country has most consistently underinvested in. The two prefectures that are not declining are Tokyo — where young people from everywhere else continue to arrive for jobs and education — and one other.

Tokyo’s growth is the mechanism of the crisis, not its solution. Every young person who leaves Hokkaido for Tokyo takes their reproductive years, their tax contributions, and their community participation with them. The regional prefecture gets older. The city gets more expensive. Neither gets better.

Japan has known this was coming for thirty years. It has spent those thirty years implementing policies that have not changed the trajectory: financial incentives for having children, extended parental leave, subsidized childcare, government messaging campaigns. The total fertility rate in 2025 remains well below the 2.1 replacement threshold. The gap between the problem and the policy response has not closed. It has widened.

The question this edition asks is not what happened. It is what works.

Not in theory. In practice. In cities that are running real experiments, at real scale, with real data on what changes when you try something different.

Six cities. Six different angles on the same problem. Some have partial solutions. Some have cautionary lessons. One has what Japan needs most and cannot yet bring itself to ask for.

(Sources: Statistics Bureau of Japan / The New York Times / OECD — May–June 2026)

Seoul 🇰🇷 — The Same Problem, Faster. And a Policy Shift That Japan Hasn’t Made Yet.

South Korea’s total fertility rate in 2023 was 0.72 — the lowest ever recorded by any country in modern demographic history. Korea is not following Japan’s path. It is ahead of it on the downward curve. But Korea has made one policy shift that Japan has resisted: it has begun, haltingly and imperfectly, to acknowledge that immigration is not a supplemental option but a structural necessity. Japan’s immigration policy remains among the most restrictive in the OECD. Korea has expanded its foreign worker intake, its professional visa pathways, and its long-term residency options at a pace that Japan’s political system has not matched. The results are not transformative. But the direction is different. What Seoul has understood — and what Tokyo has not yet formally accepted — is that a society cannot simultaneously refuse immigration and solve a demographic crisis. The arithmetic does not accommodate both positions.

Singapore 🇸🇬 — Thirty-Nine Years of Policy. The One Thing That Actually Worked.

Singapore has been running pronatalist policy since 1987. Baby bonuses. Parental leave. Housing priority for couples with children. A dedicated government agency. The total fertility rate in 2025: approximately 0.97. Below Japan’s. The direct financial incentives did not work. What Singapore’s thirty-nine years of data does show is the one intervention that demonstrably changed behavior at the margin: housing proximity to parents. When Singapore made it easier — and financially advantageous — for young couples to live near their own parents, fertility rates in those cohorts moved upward. The mechanism is not sentimental. It is practical: childcare, provided informally by grandparents, removes the single largest barrier to having a second child. Japan has multigenerational housing traditions. It has not yet built the policy infrastructure to actively support them.

Tallinn 🇪🇪 — When You Cannot Reverse the Birth Rate, Redefine What It Means to Participate in the Economy.

Estonia’s answer to demographic decline is not a birth rate solution. It is a redefinition of economic participation. E-residency allows more than 100,000 digital citizens from 170 countries to operate within Estonia’s business and legal infrastructure without physically living there. The country extracts tax revenue, innovation contributions, and reputational value from a global population while managing the physical infrastructure of a country of 1.3 million. Japan cannot replicate this directly — the scale, language barrier, and cultural specificity of the Japanese economy make Tallinn’s model difficult to import wholesale. But the underlying question Tallinn is answering is exactly the one Japan’s shrinking prefectures need to ask: when you cannot grow the population, how do you grow the economy? Hokkaido losing 239,000 people does not have to mean Hokkaido losing 239,000 units of economic participation — if the infrastructure for remote contribution is built deliberately.