Eight demographic trends to watch

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...

See which countries have already reached their peak population, and when others will eventually reach theirs.

Three ways the US population will change over the next decade

This article lists the top three ways the US population will change over the next decade. Using population data from the US Census Bureau and the UN Population Division, the piece explores what America might look like 10 years from now, which...

Everything you need to know about demography in 10 graphs

This 17-minute video explains the future of the world through demographic data points. Dr. Paul Morland has published three books on demography. In this talk, he shows how demography is a powerful lens to view global transformations. Included are...

Striking demographic trends from 2022

This article lists the 15 most striking research findings by Pew Research Center in 2022. The topics highlighted represent a sample of the Center’s research, compiled through surveys. Findings examine public opinion around the biggest news events...

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...

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.

How public policy shapes demographic trends

This IMF podcast explores the population booms and busts throughout human history. According to Harvard economist and demographer David Bloom, it took more than 50,000 years for the world population to reach 1 billion. But since 1960, we have added...

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.

Mapping how human population has grown throughout history

It took 200,000 years for our human population to reach 1 billion—and only 200 years to reach 7 billion. When will our global population peak? And how can we minimize our impact on Earth's resources, even as we approach 11 billion?

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.

America's demographic change in one chart

From 1901 to 2020, the US population has changed significantly. This video reveals the change in America’s demographics over more than 100 years.

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....

The UN’s interactive site analyzing the world’s population

The 2022 revision of World Population Prospects contains the official population estimates and projections from the United Nations. It presents population estimates from 1950 to present for 237 countries or areas around the world. The data consider...

Global population growth peaked six decades ago, at 2.3%.

As of 2022, scientists estimate that 117 billion people have been born on Earth

Although no demographic data exist for more than 99% of the time humans have existed, this value can be estimated by tracking approximate population sizes over different periods and the birth rates within those periods. In 2022, about 6.8% of humans that have ever been born were alive.

How demographics influence voter turnout and elections

This article breaks down demographic data to show what it means for American elections. According to the latest US Census, the US is growing increasingly diverse. As the population becomes more diverse, so does the electorate. Analyzing the...

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

A video introduction to demography

The Big Think's video provides a thorough introduction to the field of demography. Demography provides the tools to address and understand many of the world's problems. It uses quantitative data and mathematical models to analyze populations....

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.

Jakarta surpassed Tokyo as the world's largest city in 2025

Asia is the epicenter of global urban population, hosting most of the world's ten largest cities by population. The top three are Jakarta, Indonesia, Dhaka, Bangladesh, and Tokyo, Japan.

Visualizing the world's population centers

What does population density look like on a global scale? These detailed 3D renders illustrate our biggest urban areas and highlight population trends.

Ranking the world’s economies: 1980 vs. 2025

The US remains the world’s largest economy, having increased its annual gross domestic product from $2.9T in 1980 to $30.6T in 2025. In 1980, China ranked seventh globally with a GDP of $304B. In 2025, China ranked second with a GDP of $19.4T.

Demographic definitions and key terms

This page provides a clear definition of demography and a glossary of demographic terminology. Demography is the science of populations. By investigating birth, migration, and aging, demographers seek to understand population dynamics. The Max...

Understanding the global crash in fertility rates

This article breaks down the global crash in fertility rates. According to researchers, a global crash in children being born will have a “jaw-dropping” impact on societies. Women are choosing to have fewer children as a result of more women in...

Forecasting worldwide 5G adoption and economics

A collection of 10 regional reports from the world on all things 5G, including key trends and a range of technology, socioeconomic, and financial datasets, including forecasts out to 2025. Data charts and graphics included.

The world reached historic levels of democracy under the rules-based order, though that trend has reversed

The share of democracies worldwide grew dramatically from the mid-20th century, reaching an all-time high in the early 2010s. Since then, the trend has reversed, with an increasing number of countries experiencing democratic backsliding.

What happens when the population grows faster than the food supply?

Human history is shaped by our ability to feed ourselves. See how population growth is tied to farmland, and how food production’s profound environmental effect shows us the need for change.

A podcast on America’s coming demographic crisis

This podcast explores how America’s coming demographic crisis is bad for employers. According to Bloomberg, businesses still need humans to make the economy work. However, too few workers in the US are actually working, and too few people are...

A report on social well-being around the world

This extensive report provides quantitative evidence on social well-being trends for 36 countries. Data cover demography and family characteristics, employment and wealth, mobility and housing, health status, social expenditure, subjective...

A summary of the 2020 census

This summary of the 2020 census shows an aging America and wide racial gaps between generations. The information provides the national and geographic composition of the nation’s age and racial-ethnic makeup. New statistics for 2020 show that the...

A list of the world's top 25 economies by GDP

Gross domestic product estimates the value of goods and services produced in a country, typically through the expenditure method, which adds up spending by consumers, investors and governments with the value of exports. The top five economies are the US, China, Germany, Japan and India.

Health and population surveys from 90 countries

The Demographic and Health Surveys (DHS) Program collects, analyzes, and disseminates data on population, health, HIV, and nutrition. The site compiles data through more than 400 surveys in over 90 countries around the world. Explore demographic...

Family offices’ estimated wealth is expected to hit $9.5T by 2030

The number of family offices, and how much money under their management, is growing rapidly both in the US and around the world.

Marriage rates are declining, especially in the richest countries

89% of the world’s population now live in countries with falling rates. Increasing costs of living, the financial burden of starting a family, and the rise of secularism are some of the key factors reducing marriage rates among the less affluent.

One in 10 adults worldwide has diabetes.

The latest data on US motherhood

Here’s a snapshot of what motherhood looks like in the U.S. today, drawn from government data and Pew Research Center surveys. The list includes seven headline statistics with visual graphs, including the average age of a mother's first childbirth...

The number of billionaires in Saudi Arabia is projected to increase by 183% by 2031

Countries in the Middle East and Asia are projected to have some of the largest economic expansions by 2031, including within their billionaire populations. The global average growth projection for billionaires is 26% between 2026 and 2031.

How global conditions have improved over 200 years

In an era of 24-hour news, it can feel as if the world is on a perpetual downward spiral. This set of visualizations zoom out, and show how global living conditions have improved in recent centuries. The percentage of people living in extreme...

Visualize population densities around the world represented as geographic terrain and how those densities changed from 1900 to 1975 to 2015.

South Asia and sub-Saharan Africa are most at risk from falling pollinator numbers

Researchers at the Harvard T.H. Chan School of Public Health found that declines in pollinator populations would lead to higher rates of nutritional deficiencies, particularly in developing nations. Nations with large populations, such as China and India, would also be significantly impacted.

The share of the immigrant population in the US peaked at nearly 16% in January 2025

In January 2025, the US reached a historic high of 53.3 million immigrants—nearly 16% of the population. By June of that year, the number had fallen by more than a million, ending 50 years of continuous growth in the immigrant population.

Read the WEF’s Global Risks Report for 2025

The Global Risks Report is the World Economic Forum’s annual assessment of the most pressing threats facing the world. The 2025 edition highlights declining global optimism, deepening geopolitical and economic tensions, and rising social fragmentation across societies.

The world's 10 best places to live

The Economist Intelligence Unit's Global Liveability Index ranked 173 cities based on stability, healthcare, culture and environment, education, and infrastructure. The report shows an overall increase in livability scores compared to previous...

An interactive look at your own life through demographics

This interactive site allows you to understand the journey of your life in numbers and dates. World Data Lab asks users to enter their date of birth, country of birth, and sex at birth. The site then provides an interactive page tailored to your...

Visualizing the world's wealth in 2019

The world has a net worth of $360T. The U.S. economy continues to dominate given its sheer size, Asia and Europe are not that far behind.

Digital healthcare is helping emerging economies

In a world that is rapidly becoming more digitized, low and middle-income countries (LMICs) are trailblazing a path to cohesive digital healthcare ecosystems. This article from McKinsey & Company analyzes the different digital healthcare strategies...

The roughly 11 countries in BRICS, an economic coalition created to counter the G7, collectively hold about 40% of global gross domestic product when adjusted for purchasing power parity.

How cigarettes took over China

In 2022, China had a fifth of the world's population and bought nearly half of the world's cigarettes. This investigation explores how China became plagued by tobacco consumption, something epidemiologists say will strain the country's health system...

Charting the countries with large Sikh populations

While the vast majority of contemporary Sikhs live in Punjab, India, millions have moved elsewhere in the world, especially in anglophone countries. This chart shows which countries host the largest communities of the Sikh diaspora in the world.