Japan's Child Population Hits Historic Low, Losing 350,000 in a Year

Japan is facing a historic low in its child population, with the number of residents under 15 years old falling to 13.29 million as of 2025. This figure represents a significant decrease of approximately 350,000 children compared to the previous year, according to data released by Japan's Ministry of Internal Affairs and Communications.

This decline further underscores the demographic crisis that has gripped the nation for decades. Children now constitute a mere 10.8% of Japan's total population, the lowest proportion ever recorded. For context, in 1950, during Japan's post-war economic resurgence, individuals under 15 made up 35.1% of the population. This figure had already shrunk to 14.5% by 2000 and has continued its downward trajectory despite government initiatives aimed at boosting the birth rate.

The shrinking number of children is intrinsically linked to Japan's persistently low birth rate. The total fertility rate nationwide hovers below 1.2 children per woman, falling far short of the population replacement level of 2.1. In Tokyo, this rate is even lower, dropping to 0.99 children per woman, as reported by Russia Today.

This declining birth rate is also mirrored in a decrease in marriages. Beyond the demographic trend of a smaller youth cohort, an increasing number of young Japanese are choosing to postpone or forgo marriage and starting families. This situation fuels concerns about the future of Japan's economy and its social welfare system. A shrinking young population could lead to a reduced workforce, increased financial burdens for pensions, and greater challenges in maintaining economic growth within an aging society. Despite various government incentives, including childcare support and aid for young families, these measures have yet to reverse the decades-long decline in birth rates.

“

The total fertility rate nationwide is now below 1.2 children per woman, far below the population replacement level of 2.1. In Tokyo, this figure has even dropped to 0.99 children per woman.