Born in 1990: your generation in Japan
- Age in 2026
- 36
- People this age
- 1.2 million
- Rank among 101 ages
- #48
- Turns 65 in
- 2055
- Workers per retiree in 2055
- 1.4
The 2026 population pyramid of Japan; the highlighted row is the 1990 cohort.
This generation, then and now
People born in 1990 in Japan are 36 years old in 2026. There are about 1.2 million of them, the 48th most numerous single year of age out of 101.
The cohort started at about 1.2 million (children aged 0 at the beginning of 1991). Babies born around 2026 number about 750,581, 64% of that.
This cohort turns 65 in 2055. Japan is then projected to have 101.7 million people, 37.4% of them aged 65 or over, with 1.4 people of working age (15–64) per person aged 65+, compared with 2.0 in 2026.
Following the cohort over time, it is projected to number about 0 in 2090 (age 100), from 1.2 million at the start; deaths and migration change the count each year.
Figures from 2024 are UN medium-variant projections.
How the cohort changes over time
People of this cohort each year from birth to age 100. In countries with much immigration the cohort can grow for a while.