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Japan population pyramid 2100

76,845,989 people in 2100 (UN medium projection). This page shows Japan’s age and sex structure in 2100 and how it differs from 2026.

2100 population
76.8MUN medium projection
Median age
53.0 years2026: 50.2
Under age 15
11.4%2026: 11.0%
Age 65+
37.4%2026: 30.2%

Japan population pyramid

2100 · Share of total by five-year age group and sex

Medium projection
Japan population pyramid for 2100: males on the left and females on the right Male share Female share 100+ males: 182,292 (0.2%) 100+ females: 630,197 (0.8%) 100+ 95–99 males: 713,294 (0.9%) 95–99 females: 1,503,168 (2.0%) 95–99 90–94 males: 1,527,531 (2.0%) 90–94 females: 2,317,345 (3.0%) 90–94 85–89 males: 2,077,568 (2.7%) 85–89 females: 2,575,593 (3.4%) 85–89 80–84 males: 2,179,567 (2.8%) 80–84 females: 2,454,723 (3.2%) 80–84 75–79 males: 2,017,099 (2.6%) 75–79 females: 2,183,006 (2.8%) 75–79 70–74 males: 2,017,647 (2.6%) 70–74 females: 2,125,819 (2.8%) 70–74 65–69 males: 2,096,511 (2.7%) 65–69 females: 2,162,590 (2.8%) 65–69 60–64 males: 2,178,144 (2.8%) 60–64 females: 2,213,378 (2.9%) 60–64 55–59 males: 2,193,220 (2.9%) 55–59 females: 2,208,188 (2.9%) 55–59 50–54 males: 2,123,296 (2.8%) 50–54 females: 2,127,823 (2.8%) 50–54 45–49 males: 1,992,991 (2.6%) 45–49 females: 1,993,590 (2.6%) 45–49 40–44 males: 1,883,228 (2.5%) 40–44 females: 1,881,755 (2.4%) 40–44 35–39 males: 1,858,531 (2.4%) 35–39 females: 1,853,149 (2.4%) 35–39 30–34 males: 1,907,284 (2.5%) 30–34 females: 1,895,466 (2.5%) 30–34 25–29 males: 1,972,168 (2.6%) 25–29 females: 1,952,375 (2.5%) 25–29 20–24 males: 1,900,080 (2.5%) 20–24 females: 1,864,652 (2.4%) 20–24 15–19 males: 1,669,724 (2.2%) 15–19 females: 1,614,982 (2.1%) 15–19 10–14 males: 1,557,361 (2.0%) 10–14 females: 1,499,726 (2.0%) 10–14 5–9 males: 1,487,102 (1.9%) 5–9 females: 1,428,097 (1.9%) 5–9 0–4 males: 1,444,609 (1.9%) 0–4 females: 1,381,120 (1.8%) 0–4 10%5% Age 5%10%

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Projection

Values for 2100 come from the UN World Population Prospects 2024 medium scenario. They depend on assumptions about fertility, mortality, and migration and are not forecasts guaranteed to occur.

Japan age structure in 2100

In 2100, children under 15 are projected to make up 11.4% of the population, people aged 15–64 51.1%, and people aged 65 or older 37.4%. On these shares the structure is classed as older; see the guide to constrictive population pyramids.

The total age dependency ratio is projected to be 95.6 (22.4 children and 73.2 people aged 65+ per 100 aged 15–64). The largest five-year groups are 85–89, 80–84, 55–59, which together account for 17.8% of the population.

Fertility is projected to be 1.47 births per woman and life expectancy at birth 94.4 years. The population is projected to change by −0.50% during the year.

Japan in 2100 compared with 2026

Between 2026 and 2100, the medium scenario has Japan’s population falling by 37% and the median age rising by 2.8 years. The table sets the two years side by side; percentage-point differences compare shares, not counts.

Indicator20262100Change
Population122,427,73176,845,989−37.2%
Median age (years)50.253.0+2.8
Under 1511.0%11.4%+0.4 pts
Aged 15–6458.8%51.1%−7.7 pts
Aged 65+30.2%37.4%+7.2 pts
Fertility rate1.231.47+0.24
Life expectancy (years)85.194.4+9.3
Males per 100 females95.192.8−2.3

Japan population by age and sex in 2100

Counts by five-year age group, with everyone aged 100 or older combined. Download the CSV for every chart year.

Age groupMaleFemaleTotalShare
0–41,444,6091,381,1202,825,7293.7%
5–91,487,1021,428,0972,915,1993.8%
10–141,557,3611,499,7263,057,0874.0%
15–191,669,7241,614,9823,284,7064.3%
20–241,900,0801,864,6523,764,7324.9%
25–291,972,1681,952,3753,924,5435.1%
30–341,907,2841,895,4663,802,7504.9%
35–391,858,5311,853,1493,711,6804.8%
40–441,883,2281,881,7553,764,9834.9%
45–491,992,9911,993,5903,986,5815.2%
50–542,123,2962,127,8234,251,1195.5%
55–592,193,2202,208,1884,401,4085.7%
60–642,178,1442,213,3784,391,5225.7%
65–692,096,5112,162,5904,259,1015.5%
70–742,017,6472,125,8194,143,4665.4%
75–792,017,0992,183,0064,200,1055.5%
80–842,179,5672,454,7234,634,2906.0%
85–892,077,5682,575,5934,653,1616.1%
90–941,527,5312,317,3453,844,8765.0%
95–99713,2941,503,1682,216,4622.9%
100+182,292630,197812,4891.1%

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APA

World Population Pyramid. (2026, September 28). Japan Population Pyramid 2100. https://worldpopulationpyramid.com/countries/japan/2100/

MLA

“Japan Population Pyramid 2100.” World Population Pyramid, 28 Sept. 2026, worldpopulationpyramid.com/countries/japan/2100/.

Chicago

World Population Pyramid. “Japan Population Pyramid 2100.” Last modified September 28, 2026. https://worldpopulationpyramid.com/countries/japan/2100/.

Underlying data: United Nations, Department of Economic and Social Affairs, Population Division (2024). World Population Prospects 2024.

Frequently asked questions

What is the projected population of Japan in 2100?

UN World Population Prospects 2024 projects Japan's population in 2100 at 76,845,989 under the medium scenario.

What will be the median age in Japan in 2100?

The median age is projected to be 53.0 years, compared with 50.2 years in 2026.

What share of Japan is projected to be under 15 or 65+ in 2100?

11.4% are projected to be under 15 and 37.4% aged 65 or older, giving a total age dependency ratio of 95.6.

Sources and notes