Every other age bracket in this series moves at roughly the same pace as total population growth. The 80-plus population does not. Since 1990, the number of people aged 80 and older has grown faster than any other segment of the older population, and faster, proportionally, than almost any age group on earth. It is the clearest evidence available that population aging is not a single trend but an accelerating one, concentrated most intensely at the very top of the age pyramid.
The oldest old, as demographers sometimes call this group, were once a demographic footnote. They are becoming one of the fastest-growing cohorts on the planet, and the systems built around retirement, healthcare, and family caregiving were, in almost every country, designed decades before this group reached its current scale.
This piece sits deliberately apart from the broader 65-plus coverage elsewhere in this series. The 80-plus population behaves differently: it grows faster, skews more heavily female, and drives a different set of policy pressures, particularly around long-term care and healthcare spending, than the 65-plus population as a whole. Treating it as its own category, rather than folding it into general aging statistics, is the only way to see how fast this specific group is actually expanding.
How Many People Worldwide Are Over 80?
- Current population: an estimated 150 to 160 million people worldwide are aged 80 or older, based on recent UN and WHO figures.
- Global percentage: roughly 1.8 to 2 percent of the world’s population.
- Historical growth: the number of people aged 80 and older has grown faster than the 65-to-79 population every year since 1990, according to Pew Research analysis of UN data.
- Future projections: the World Health Organization projects the global 80-plus population will nearly triple between 2020 and 2050, reaching approximately 426 million.
How the 80 Plus Population Has Exploded
| Period | Approximate Global 80+ Population | Growth Context |
|---|---|---|
| 1950 | Under 15 million | A demographic rarity outside a handful of wealthy countries |
| 2000 | ~70 million | Growth accelerating in Japan and Western Europe |
| 2020 | ~146 million | WHO baseline year for its 2050 tripling projection |
| Today (2024/2025) | ~150-160 million | Continued acceleration across nearly every region |
| 2050 (projected) | ~426 million | Nearly triple the 2020 figure, per WHO |
Key finding: The 80-plus population is growing at a pace that outstrips every other major age bracket tracked in global demographic data. While total world population growth continues slowing, the oldest-old population is doing the opposite: accelerating.
Where Do the World’s 80 Plus Population Live?
- Largest populations by number: China, the United States, Japan, India, and several major European economies hold the largest absolute 80-plus populations, largely reflecting their overall population size.
- Highest shares: Japan holds the highest proportion of 80-plus residents of any country, a direct extension of its position as the world’s most aged society by percentage.
- Regional differences: East Asia and Western Europe currently hold the largest concentrations of the 80-plus population, though the fastest percentage growth going forward is expected in parts of Latin America and Asia that are aging rapidly from a lower starting base.
Why Are More People Reaching 80?
Five decades ago, reaching 80 was a genuine outlier in most parts of the world. Today it is a routine milestone across dozens of countries, the product of several compounding trends rather than any single medical breakthrough.
- Falling mortality: death rates at every age below 80 have declined substantially over the past century, meaning far more of each birth cohort now survives long enough to reach this threshold.
- Medical advances: improved treatment for cardiovascular disease, cancer, and other leading causes of death in mid-to-late life has extended survival well past traditional retirement ages.
- Better nutrition: improved nutrition earlier in life has measurably extended lifespan across successive generations in most regions, an effect that compounds across a person’s entire lifetime rather than appearing only in old age.
- Public health: vaccination, sanitation, and disease prevention programs implemented decades ago are now showing up as extended survival among the cohorts who benefited from them earliest in life.
- Improved living conditions: broader gains in housing, income, and general living standards have compounded with medical progress to push average lifespans higher across nearly every region.
Women and Extreme Longevity
- Why women generally live longer: biological and behavioral factors combine to give women a consistent life expectancy advantage over men in nearly every country, typically several years at birth and widening further at older ages.
- Gender differences among the 80-plus population: women make up roughly 64 percent of the global population aged 80 and older, and an even higher share among centenarians specifically.
- Implications for elder care: because women dominate the oldest age brackets and are more likely to be widowed by this age, elder care policy and long-term care planning are disproportionately shaped by the needs of older women living alone.
The Rise of Centenarians
- Definition: a centenarian is a person who has reached the age of 100 or older, used by demographers as a marker of extreme longevity within a population.
- Historical growth: the global centenarian population has grown from roughly half a million in 2015 to an estimated 722,000 in 2024, more than four times the number recorded in 1990.
- Countries with high centenarian populations: Japan holds the largest centenarian population of any country, at approximately 120,000, followed by the United States at roughly 64,000 and China at roughly 39,000; India and France each report around 29,000.
- Factors associated with exceptional longevity: genetics, diet, healthcare access, and social connection are the most commonly cited factors in populations and communities that show unusually high concentrations of centenarians.
“By 2050, China is expected to have the largest centenarian population, followed by Japan, the U.S., Italy and India,” Pew Research Center noted in its analysis of UN longevity projections, adding that Japan and Italy will retain the highest centenarian share relative to total population.
Key data point: The ratio of centenarians per 10,000 people aged 65 and older has climbed from 2.9 in 1990 to 7.4 in 2015, and the UN projects it will reach 23.6 by 2050, an eightfold increase over 60 years.
Economic and Social Implications
- Healthcare: the 80-plus population requires disproportionately higher per-person healthcare spending than any younger age group, driven by higher rates of chronic and multiple co-occurring conditions that demand ongoing management rather than one-time treatment.
- Long-term care: demand for residential and home-based long-term care is rising fastest in exactly the countries with the largest 80-plus populations, including Japan, Italy, and Germany, often outpacing the available supply of trained caregivers.
- Pension systems: the oldest old often draw on pension systems for decades longer than those systems were originally designed to sustain, adding pressure on top of the broader 65-plus pension burden discussed elsewhere in this series.
- Family caregiving: with fewer working-age relatives available per older person, informal family caregiving is becoming harder to sustain in many aging societies, pushing more responsibility onto formal care systems that are themselves under strain.
- Housing: demand for accessible, single-level, and assisted-living housing is rising fastest among this age group specifically, distinct from the broader housing needs of the 65-plus population as a whole.
- Longevity economy: the expanding 80-plus and centenarian populations are creating new markets in healthcare technology, financial planning, and specialized consumer products aimed at extreme longevity, an emerging sector still in its early stages in most countries.
The Future of Extreme Longevity
- How far the 80-plus population could grow: WHO projections put the global 80-plus population at approximately 426 million by 2050, nearly triple its 2020 level, with growth continuing well beyond that point under most UN scenarios.
- Potential impact of continued life expectancy gains: even modest further gains in life expectancy at older ages would meaningfully accelerate 80-plus and centenarian population growth beyond current central projections.
- Questions around healthy aging: demographers and public health researchers increasingly distinguish between simple survival to advanced age and healthy life expectancy, the number of those additional years spent free of serious disability, a distinction that will shape healthcare and long-term care demand as much as raw population counts do.
Conclusion
The 80-plus population is the fastest-growing major age bracket on the planet, expanding faster than the 65-to-79 group, faster than the working-age population, and far faster than total world population itself. What was once a demographic rarity, confined largely to a handful of wealthy countries with strong public health systems, is becoming a global reality expected to reach 426 million people by 2050 and to keep climbing well beyond that.
Centenarians, once a genuine statistical curiosity, are on track to number in the millions within a single generation. Every system built around old age, healthcare, pensions, housing, and family care is now being tested by a population older than the one those systems were designed for.
Frequently Asked Questions
1. How many people worldwide are aged 80 or older?
An estimated 150 to 160 million people, roughly 1.8 to 2 percent of the global population.
2. How fast is the 80-plus population growing?
Faster than any other major age bracket. The World Health Organization projects it will nearly triple between 2020 and 2050, reaching approximately 426 million.
3. Which country has the most centenarians?
Japan, with an estimated 120,000 people aged 100 or older, the highest of any country.
4. How many centenarians are there in the world today?
Approximately 722,000 as of 2024, according to UN estimates, up more than fourfold since 1990.
5. How many centenarians are projected to exist by 2050?
Around 3.7 to 4 million globally, based on UN and Pew Research projections.
6. Why do women make up a larger share of the oldest population?
Women generally live longer than men due to a combination of biological and behavioral factors, making up roughly 64 percent of the global 80-plus population and an even higher share of centenarians.
7. Which countries have the largest 80-plus populations in absolute numbers?
China, the United States, Japan, and India hold the largest 80-plus populations, primarily reflecting their large overall population sizes.
8. What is driving the rapid growth of the 80-plus population?
Falling mortality at younger ages, medical advances, improved nutrition, and broader gains in living standards, all compounding across successive generations.
9. What is the difference between life expectancy and healthy life expectancy?
Life expectancy measures total expected years of survival, while healthy life expectancy measures the years expected to be lived free of serious disability, an increasingly important distinction as the 80-plus population grows.
10. Will the 80-plus population keep growing after 2050?
Yes. Most UN and WHO projections show continued growth well beyond 2050, driven by the large cohorts currently in their 60s and 70s aging into this bracket over the following decades.
Sources
- World Health Organization, “Ageing and Health” fact sheet
- Pew Research Center, “World Population Ages 100 and Up to Grow Eightfold by 2050”
- United Nations, World Population Prospects 2024 Revision, Population Division, Department of Economic and Social Affairs
- CEOWORLD Magazine, “The Global Centenarian Surge: How 4 Million People Over 100 Will Reshape Markets and Policy”
- World Population Review, “Centenarians by Country 2026”
