Number of 1-year-olds, by sex in Japan
Japan: Number of 1-year-olds, by sex was 390,411 people in 2023. ▼ Falling
Number of 1-year-olds, by sex in Japan, 1950–2023
Source: UN, World Population Prospects (2024) – processed by Our World in Data. Measured in people.
Analysis
Japan recorded 390,411 people for number of 1-year-olds, by sex in 2023. That is the lowest value across all 74 years on record.
The figure is down 3.0% on the previous year and down 22.8% over ten years.
Over the whole period, number of 1-year-olds, by sex in Japan peaked at 1.24 million people in 1950 and was at its lowest, 390,411 people, in 2023.
Japan ranks 37th of 236 countries on this measure, in the top quarter.
The long-run direction has been consistently falling across the 74 years of available data.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 947,624 people | 777,523 people | 1.24 million people | 10 |
| 1960s | 810,263 people | 774,207 people | 914,303 people | 10 |
| 1970s | 950,092 people | 845,545 people | 1.04 million people | 10 |
| 1980s | 710,790 people | 620,025 people | 818,324 people | 10 |
| 1990s | 575,496 people | 565,818 people | 596,383 people | 10 |
| 2000s | 552,760 people | 528,223 people | 576,616 people | 10 |
| 2010s | 493,229 people | 450,968 people | 527,014 people | 10 |
| 2020s | 410,277 people | 390,411 people | 433,039 people | 4 |
Countries ranked near Japan
More reference data data for Japan
- Temperature anomalies by month -0.7172 °C (2026)
- Spring temperature anomalies 1.24 °C (2026)
- Summer temperature anomalies 0.1053 °C (2026)
- Chief executive of the government is elected 1 (2025)
- Civil liberties rating 1 (2025)
- Democracy 7 (2025)
- Free country 2 (2025)
- Consumer price index 118.04 2010 = 100 (2025)
- Competitive elections 1 (2025)
- Autumn temperature anomalies 1.9 °C (2025)
Frequently asked questions
- What is number of 1-year-olds, by sex in Japan?
- Number of 1-year-olds, by sex in Japan was 390,411 people in 2023, according to UN, World Population Prospects (2024) – processed by Our World in Data.
- What is the highest number of 1-year-olds, by sex recorded in Japan?
- The highest recorded value was 1.24 million people in 1950.
- What is the lowest number of 1-year-olds, by sex recorded in Japan?
- The lowest recorded value was 390,411 people in 2023.
- How does Japan rank for number of 1-year-olds, by sex?
- Japan ranks 37th out of 236 countries with data for 2023.
- Is number of 1-year-olds, by sex rising or falling in Japan?
- Over the last ten years it is down 22.8%. The long-run trend across the full record is falling.
- Where does this Japan data come from?
- The figures come from UN, World Population Prospects (2024) – processed by Our World in Data, published as part of Number of 1-year-olds, by sex. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 74 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
The total population, measured on 1 July of the year shown. This only includes women aged 1.