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The World Population in 2100, by Country

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Global Population Estimates 2100

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The World Population in 2100, by Country

In 2015, the United Nations predicted that the global population could surpass 11 billion by the end of the century.

Last year, the UN revised these estimates, but the numbers it came up with were still well above 10 billion. These regular projections from the UN have been the status quo—until now.

Plenty of signs have pointed to there being a population plateau, but recent research from the Institute for Health Metrics and Evaluation (IHME), published in The Lancet, suggests that the number of people on this planet may actually start to shrink well before the year 2100.

Here’s a closer look at these complex projections.

UN vs. IHME Population Estimates

According to the UN, the world population is set to steadily rise over the years:

  • 2030: 8.5 billion
  • 2050: 9.7 billion
  • 2100: 10.9 billion

In contrast, IHME paints a different picture. It projects the population to actually peak at 9.7 billion in 2064. Following this trajectory, there could be 8.8 billion people in 2100, approximately 2 billion fewer than previously thought.

Various demographic factors are behind these differences—higher life expectancies, migration rates, and lower fertility rates. For this last factor, independent drivers including contraceptive access and higher educational attainment were also considered.

A shifting age structure is also a key aspect of this transition. By 2100, over a quarter of the world or nearly 2.37 billion will be aged 65 years and above.

The Most Populous Countries in 2100

Amid all these demographic sea changes, which countries will come out on top?

Despite an overall decline in numbers to 1.09 billion people in 2100, India moves up from second to first place on the population leaderboard.

RankCountryPopulation (2017)RankCountryPopulation (2100E)
#1🇨🇳 China1.4B#1🇮🇳 India1.09B
#2🇮🇳 India1.38B#2🇳🇬 Nigeria791M
#3🇺🇸 U.S.325M#3🇨🇳 China732M
#4🇮🇩 Indonesia258M#4🇺🇸 U.S.336M
#5🇵🇰 Pakistan214M#5🇵🇰 Pakistan248M
#6🇧🇷 Brazil212M#6🇨🇩 DR Congo246M
#7🇳🇬 Nigeria206M#7🇮🇩 Indonesia229M
#8🇧🇩 Bangladesh157M#8🇪🇹 Ethiopia223M
#9🇷🇺 Russia146M#9🇪🇬 Egypt199M
#10🇯🇵 Japan128M#10🇹🇿 Tanzania186M

The populations of both India and China will begin to contract after the mid-century—and it’s predicted that China’s total population will drop by almost half to 732 million by 2100.

Led by Nigeria, Sub-Saharan Africa is the only region that will continue to see growth by century’s end. In fact, four of the top 10 countries in the world in terms of population count will be located in Sub-Saharan Africa.

Tightly Packed Together

One final thing to consider is how population density may look in 2100, with many more people clustered in the same areas. For example, Nigeria is dealing with a land area nearly 11 times smaller than the U.S.—but it will have more than double the population.

Country2100 Pop.Area (Millions, km²/mi²)Population Density per km² (mi²)
🇳🇬 Nigeria791M0.92M km² (0.36M mi²)856.3 (2217.7)
🇮🇳 India1.09B3.29M km² (1.27M mi²)331.6 (858.8)
🇵🇰 Pakistan248M0.88M km² (0.34M mi²)281.2 (728.3)
🇪🇹 Ethiopia223M1.10M km² (0.42M mi²)202.7 (531.0)
🇪🇬 Egypt199M1.01M km² (0.39M mi²)197.0 (510.1)
🇹🇿 Tanzania186M0.95M km² (0.37M mi²)196.3 (508.5)
🇮🇩 Indonesia229M1.90M km² (0.74M mi²)120.2 (311.4)
🇨🇩 DR Congo246M2.35M km² (0.91M mi²)104.9 (271.7)
🇨🇳 China732M9.60M km² (3.70M mi²)76.3 (197.8)
🇺🇸 U.S.336M9.83M km² (3.80M mi²)34.2 (88.5)

Regardless of how the future population count shakes out, it’s clear that these heavyweight countries will undergo significant transformation in the coming decades.

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Demographics

Visualizing Racial Diversity in America’s 10 Largest States

Here’s how racial diversity breaks down across the 10 largest U.S. states by population—from California to Michigan.

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Visualizing Racial Diversity in America’s 10 Largest States

This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.

Over the last decade, America has become increasingly more diverse as demographic patterns shift across the population.

With over 39 million people, California is not only the most populous state, but one of the most diverse in the country.

This graphic shows the racial diversity of the 10 biggest states by population, based on data from the U.S. Census.

How Diverse Are America’s Most Populous States?

Here is the racial breakdown of the 10 largest U.S. states:

StateWhite (%)Black (%)Asian (%)Other (%)
California5661523
Texas6912514
Florida7216310
New York6215914
Pennsylvania791146
Illinois7014611
Ohio801225
Georgia573247
North Carolina682138
Michigan781436

As the table above shows, California has the highest proportion of Asian Americans across the top 10 states, comprising 15% of the population.

Meanwhile, Georgia’s ethnic makeup includes 32% of Black Americans, the highest across the most populous states. As diversity has risen over the last decade, it has significantly influenced politics at both the state and national level. The state voted Republican for every presidential election from 1996-2016, but flipped blue in 2020.

With 80% of the population being White Americans, Ohio has the highest share across the biggest states. While diversity has increased since 2010, it has been seen mostly in urban and suburban districts while diversity has stagnated in rural areas.

Overall, 24% of rural areas in the U.S. are made up of non-White Americans, rising by a median rate of 3.5% across counties since 2010. While this debunks the myth that “rural” is synonymous with “white”, racial diversity across rural areas falls below the national average of 42% of the population being people of color.

Beyond the top 10 states, ethnic diversity is the highest in Hawaii, Nevada, and Maryland.

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