Monaco has the world's oldest population, with more than 36% of residents aged 65 or older, according to World Bank data.

Roughly 10% of the world's population is older than 65 (2023 data)

With recent advances in medicine, sanitation, and nutrition, expected lifespans have rapidly risen around the globe—resulting in a rapidly aging global population. The worldwide distribution has seen a nearly 600% jump in the population of people aged 65 and older.

Nearly 1 in 4 Americans over age 65 is still working

While many of these Americans are often working part-time, the share varies significantly by US state. While roughly 29% of those over the age of 65 work in Vermont, only about 17% do the same in West Virginia.

The average retirement age by country, visualized

In the US, the average retirement age was 64 as of 2020. The Organization for Economic Co-operation and Development projects a two-year increase in the average retirement age by the mid-2060s.

Super-agers: seniors 80 and above with the memory ability of people in their 50s

Studies show the number one indicator of whether someone is a "super-ager" is not diet or genetics, but the extent of their social relationships. Moreover, scans reveal noticeable physical differences in certain parts of the brain in patients with extensive social networks.

The disparity in life expectancy between wealthy and impoverished nations has notably narrowed

In 1950, people in Norway lived to age 72, on average, while those in Mali lived to just 26. By 2015, the countries with the worst conditions had made such significant progress that the global average life expectancy had surpassed the rate of any nation in 1950.

Americans are retiring later than they used to

A Gallup poll from 2022 found that the percentage of adults between the ages of 55 and 74 who are retired is declining.

Roughly 68.5 million Americans were enrolled in Social Security benefits in December 2024

That amounted to nearly 90% of people ages 65 and older. The federal government spent $1.5T on Social Security in fiscal year 2024 (nearly a quarter of the total federal budget). This article details how these figures contribute to the perception that Social Security is “running out.”

Millions of aging Americans are facing dementia or cognitive impairment—alone

An estimated 4.3 million people aged 55 or older who have cognitive impairment or dementia live alone in the US. The individuals facing these challenges are more likely to be women, people of color, and to generally be poorer and less educated than other older adults who are also living alone.

Eight demographic trends to watch

This list highlights eight demographic trends expected to shape the world in the coming decades. The world’s population is projected to hit 9 billion in 2037. In that time, India will overtake China in population, and the Democratic Republic of...

Four global trends in shifting demographics

This UN summary outlines four global trends in shifting demographics. The world’s population is expected to peak by the end of the century as fertility rates continue to decline. Between now and 2050, the global population is projected to become...

Monaco is the world's most expensive real estate market

New York City was the world's second-most expensive real estate market, and Hong Kong was the third. A visual ranks the top 20 most expensive real estate markets in the world at the time.

Many countries, like Iceland and Norway, offer pensions to elderly citizens

Iceland, Luxembourg, and Norway offer some of the highest annual pension payouts at over 30,000 euros. The below chart shows how European nations stack up in terms of which offer the highest annual pension payouts.

One biologist is leading the blue zone criticisms—both questioning the original recordkeeping for these purported longevity-prone locations and pointing to recent research showing declining numbers of healthy seniors in several official blue zone regions.

By 2030, roughly 6% of the world's population will be in menopause

An estimated 25 million women pass through menopause annually, with a projected increase in the number of women in menopause in both lower-resource and higher-income populations in the years ahead, highlighting the social and economic value of focusing on menopause care.

Blue zones are regions with unusually high numbers of centenarians

Factors thought to contribute to longevity in these regions include diet and social connections, but their legitimacy is often questioned due to a lack of rigorous scientific methodology and potential record inaccuracies.

The World Bank’s population data bank

This website by the World Bank provides visualizations for demographic data from around the world. Specific demographic data, such as total population, can be viewed through maps, charts, and graphs. Results can be filtered by sex, country, or year....

Americans think they need $1.46M to retire comfortably in 2026

That's far less than what many Americans have saved. While the median retirement savings for those ages 65 to 74 is $200K, the mean is about $609K.

See worldwide hearing loss by age group and country

This 2023 data from the Institute for Health Metrics and Evaluation shows the estimated number of people with complete hearing loss in different age groups per 100,000 people in the population. Individuals aged 70 or older make up the largest group with this type of hearing deficit.

Most self-reported claims of exceptional longevity are exaggerated, but read how demographers verify age claims and why some of the original blue zone demographers say blue zone regions are real and worth studying.

In the original 2004 blue zones study, which sought to verify the ages of long-lived, healthy populations in Sardinia, Italy, researchers hypothesized that inbreeding in these isolated communities may have helped promote their longevity. (Paywall may apply.)

Visualize America’s retirement savings by age

The median retirement savings for Americans was $87K as of May 2024. Some financial experts might find that number concerning, since a recent Northwestern Mutual survey found that $1.46M is the ideal retirement savings target. A graphic shows the current averages and medians broken down by age group.

Read the main paper criticizing the concept of blue zones, which argues recordkeeping errors, pension fraud, and natural disasters likely explain the high numbers of purported healthy centenarians in certain locations.

View the countries with the most internet users, including 94% of those in high-income nations

As of 2025, the four most populous nations—China, India, the US, and Indonesia—are also the ones with the most internet users, collectively accounting for almost half of the 6.04 billion internet users worldwide. This suggests that population size, rather than adoption rate, is a better predictor of online activity.

Amazon is the most-loved brand among baby boomers

Macy's ranked at number five for the oldest generation alive today, whereas Gen Xers have Apple in their number one slot. This data visualization outlines the most-loved brands among baby boomers.

Data visualizations showing population growth around the world

This page presents data, charts, and analysis on changes in population growth around the world. Over the last few centuries, the human population has gone through an extraordinary change. In 1800, there were 1 billion people; today, there are more...

8 key milestone ages in retirement

At age 50, you can make catch-up contributions to retirement accounts. At age 65, you become eligible for Medicare.

Perceived isolation ages you

Mounting evidence suggests that socialization is a vital component of maintaining good health. Research published in 2024 from Mayo Clinic researchers analyzed the social lives of more than 280,000 adults and concluded that individuals that weren't likely to participate in extracurricular social activities and get-togethers were more likely to have a biological age older than their actual age—meaning that you may be 60 but health indicators would suggest you're older.

Who has retirement accounts?

Though every worker wants to retire, only some have retirement accounts. Data from the Census Bureau shows those who currently own such accounts are disproportionately white and Asian men in the Baby Boomer generation, suggesting access to these crucial retirement plans is not equal. Dive into the numbers and get a sense of who has retirement accounts here.

The 20 best small US towns for retirement

Roughly 1 million Americans retire each year, and a quarter of them relocate. This list showcases twenty of the best small towns—with populations no larger than 100,000—for retirees in the US, evaluating each locale by its affordability, safety,...

See how populations across the world could change in the 21st century

This tool lets you model the populations of individual countries by adjusting key demographic inputs. See how changes in birth rates, mortality, and migration affect the size and structure of future populations.

Alzheimer's in the United States is most prevalent in the South and the East.

See which age group pays the most in taxes each year

Americans between 45 and 55 pay nearly 30% of all income taxes, bearing the largest share of tax burden in the country. These taxpayers pay an average tax rate of around 17%.

25% of US households had no regular income as of 2024

Some states had higher shares of no-income households than others: West Virginia, for instance, had a national high of 34% of households with no income. These states tend to have older populations, higher rates of disability, and lower median incomes overall. In such contexts, a larger portion of households rely on non-earned income sources or report no income during the survey period.

America's financial burden from dementia in 2025 was $781 billion

That figure, calculated by researchers at the University of Southern California, includes medical and long-term care costs, unpaid family and friend caretaking, lost productivity for patients and their families, and the economic loss in quality of life for patients and their families. In 2025, they estimate there were 5.6 million people living with dementia.