The number of children living in Japan just hit another depressing milestone. As of April 1, 2026, the population of children under 15 shrank to an estimated 13.29 million. This number dropped by exactly 350,000 children compared to the previous year. The Japanese government released this grim data on Monday, just one single day before the country celebrated its national Children’s Day holiday.
This massive drop represents a very dark trend for the island nation. The child population has now declined for 45 consecutive years. The numbers keep falling even though the Japanese government spends billions of yen trying to fix the problem. Politicians constantly launch new programs to tackle the falling birthrate, including handing out expanded financial support checks directly to child-rearing households to help cover the high costs of raising a family.
The Ministry of Internal Affairs and Communications provided a deeper look at the raw numbers. The data shows that the ratio of children under 15 compared to the total Japanese population fell by 0.3 percentage points from the previous year. Right now, children make up only 10.8 percent of the entire country. This is the lowest ratio recorded since the government began collecting comparable data in 1950.
To get these numbers, the government uses population estimates derived from a massive national census conducted every 5 years by workers. It is important to note that these figures for the specific child population also include foreign residents currently living in Japan with their families.
The government broke the data down further by gender and specific age groups. Of the 13.29 million children, the researchers counted exactly 6.81 million boys and 6.48 million girls. Looking closely at the different age brackets reveals an even scarier picture for the country’s future.
The data show that exactly 3.09 million children currently fall into the older 12 to 14 age group. However, when researchers looked at the youngest group, aged 0 to 2 years, they found only 2.13 million toddlers. This massive gap between older kids and toddlers clearly shows that the number of new births continues to decline rapidly every year.
The Ministry of Health, Labor and Welfare released preliminary data regarding the total number of babies actually born last year. In 2025, the number of children born inside Japan, which includes babies born to foreign nationals, dropped to a devastating record low of just 705,809. This awful number marked the 10th straight year that total births decreased in the country.
Japan once possessed a booming youth population. Back in 1954, right after the end of the war, the child population peaked at a massive 29.89 million kids. The country even experienced a second massive baby boom between 1971 and 1974. However, after that brief spike, the total child population began a steady, unstoppable downward trend starting in 1982.
This massive demographic shift puts severe pressure on the Japanese economy. As the population grows older and retires, the country loses its active workforce. Fewer young people means fewer taxpayers available to fund the expensive national healthcare and pension systems that support the massive elderly population.
Japan currently stands near the absolute bottom of the global youth rankings. A recent United Nations survey examined 38 countries with populations of 40 million or more. The survey found that Japan ranks as the second-lowest country on Earth in terms of the proportion of children to adults. The only country facing a worse demographic crisis is neighboring South Korea, which recorded an incredibly low child ratio of just 10.2 percent.
