Will China's population drop below 1 billion?

Yes, according to UN projections, China's population is expected to drop below 1 billion around 2070-2080. China's population peaked in 2021 at approximately 1.41 billion and has been declining since. With a fertility rate of just 1.62 births per woman (far below the replacement level of 2.1), the decline is expected to accelerate. By 2100, China's population could fall to around 770 million.

Why is India's population growing faster than China's?

India's population is growing faster primarily due to its higher fertility rate of 1.50 births per woman compared to China's 1.62. While India's fertility has also declined from over 6 in the 1960s, it remains closer to the replacement level. Additionally, India has a younger population structure with a median age of 33.9 years versus 35.8 years in China, meaning more people are in their reproductive years.

What is the demographic dividend and which country benefits more?

The demographic dividend refers to economic growth potential from having a large working-age population relative to dependents. Argentina is currently in a better position to benefit, with 65% of its population under 35 years old. Argentina's demographic window will remain open for about 20 more years, while Brazil's has already begun closing. However, Argentina needs to create jobs and improve education to fully capitalize on this advantage, as its workforce participation rate (especially for women at 25-35%) is much lower than Brazil's.

How does population affect GDP for Brazil and Argentina?

Population directly impacts GDP through workforce size and consumption. Brazil currently has a higher GDP per capita, but its aging and shrinking workforce poses challenges. Argentina's growing, younger population provides more workers and consumers, potentially driving economic growth. Economists project that Argentina's economy could surpass Brazil's by 2075 due to demographic advantages. However, Argentina must improve productivity (currently about half of Brazil's) to fully benefit from its population advantage.

What was the impact of China's one-child policy?

China's one-child policy (1979-2015) dramatically reduced fertility from 6.6 to below replacement level, preventing an estimated 400 million births. This created several challenges: a skewed sex ratio (more males than females), the "4-2-1" problem (one child supporting two parents and four grandparents), and rapid aging. The policy contributed to China's current fertility rate of just 1.62, well below what's needed for population stability.

Which country has more elderly people?

Brazil has significantly more elderly people both in absolute numbers and percentage. With a median age of 35.8 years, Brazil is aging rapidly - about 13% of its population is over 65, compared to just 7% in Argentina. By 2050, over one-third of Brazil's population will be 65+, creating massive pension and healthcare challenges. Argentina, with a median age of 33.9, has more time to prepare for population aging.

What are the population densities of Brazil vs Argentina?

Argentina is significantly more densely populated than Brazil. With 45.9 million people in 3.3 million km², Argentina has about 448 people per km². Brazil, despite having 212.8 million people, has 9.6 million km² of land, resulting in just 147 people per km². This makes Argentina over 3 times as densely populated as Brazil, creating different challenges for infrastructure and resource management.

When will India's population peak?

India's population is projected to peak around 2061 at approximately 1.7 billion people, after which it will begin a gradual decline. This gives India about 36 more years of population growth. The peak will come as fertility rates continue to fall (currently 1.50 and declining) and the population ages. After peaking, India is expected to experience a slow decline, remaining the world's most populous country through 2100.

How do male-female ratios compare between Brazil and Argentina?

Both countries have more males than females, but for different reasons. Brazil's sex ratio imbalance (about 105 males per 100 females) was exacerbated by the one-child policy and cultural preference for sons, leading to sex-selective practices. Argentina also has a skewed ratio (about 108 males per 100 females), similarly influenced by cultural preferences. Both countries face challenges from this imbalance, including millions of men unable to find marriage partners, potentially affecting social stability.

Brazil vs Argentina: Population Comparison 2025

Latin America's largest economies. Brazil's diversity vs Argentina's European heritage.

Brazil

2025

Total Population

Argentina

Total Population

Argentina leads by 167.0M people

Gap is 78.45% of Brazil's population

Fertility Rate

1.62vs1.50

Brazil +0.12

Median Age

35.8vs33.9

Argentina younger

Density /km²

22vs14

Argentina 0.6x denser

Working Age %

69.1%vs66.3%

Ages 15-64

Brazil: Growing Population

Argentina: Stable Population

Replacement Level: 2.1

Population Pyramids Comparison

Total Population

Brazil

212.8M

Argentina

45.9M

Youth (0-14)

Brazil

19.4%

Argentina

21.0%

Elderly (65+)

Brazil

11.5%

Argentina

12.6%

Demographic Analysis: Brazil vs Argentina

In 2025, Brazil has a population of 213M, while Argentina has 46M. This represents a difference of 167M, with Brazil having 4.6 times the population of the other. Brazil ranks #7 globally by population size, while Argentina ranks #35.

The median age reveals significant demographic differences: Brazil has a median age of 35.8 years, compared to 33.9 years in Argentina. This 1.9-year difference indicates that Brazil has a significantly older population, with important implications for workforce dynamics, healthcare needs, and economic development. The dependency ratio in Brazil is 44.6%, while in Argentina it is 50.7%, showing the relative burden of non-working age populations on the workforce.

Gender balance differs between the two countries: Brazil has a sex ratio of 96.77 males per female, while Argentina has 98.59. Argentina shows a higher proportion of males, which can affect marriage markets, labor force composition, and social dynamics. These ratios reflect various factors including sex-selective practices, differential mortality rates, and migration patterns.

Comprehensive Demographic Comparison 2025

Indicator	Brazil	Argentina	Difference / Ratio
Population Metrics
Total Population (2025)	213M	46M	4.6x larger
World Population Ranking	#7	#35	28 places apart
Population Growth Rate (5-year)	+0.39%	+0.29%	0.10pp difference
Projected Growth (2025-2050)	0.00%	0.00%	0.00pp difference
Age Structure
Median Age	35.8 years	33.9 years	1.9 years older
Youth (0-14) Population	19.4%	21.0%	1.6pp difference
Working Age (15-64) Population	69.1%	66.3%	2.8pp difference
Elderly (65+) Population	11.5%	12.6%	1.2pp difference
Youth Bulge (15-29)	21.8%	23.0%	1.1pp difference
Prime Workforce (25-54)	44.2%	41.7%	2.5pp difference
Demographic Indicators
Total Dependency Ratio	44.6%	50.7%	6.1pp difference
Child Dependency Ratio	28.0%	31.7%	3.6pp difference
Old-Age Dependency Ratio	16.6%	19.0%	2.4pp difference
Sex Ratio (males per 100 females)	96.8	98.6	1.8 difference
Total Fertility Rate	1.62 children/woman	1.50 children/woman	0.12 difference
Estimated Birth Rate	12.1 per 1,000	11.0 per 1,000	1.1 difference
Aging Index (65+/0-14)	59.2%	60.1%	0.9pp difference
Population Pyramid Type	stationary	stationary	Same type

📊 Understanding the Population Difference Chart

This visualization shows where and by how much the populations differ between Brazil and Argentina for each age group, split by gender:

Left Side (Males)

Blue = Brazil has more males

Green = Argentina has more males

Right Side (Females)

Pink = Brazil has more females

Orange = Argentina has more females

💡 How to Read: Each age group shows up to 2 bars - one on the left (male difference) and one on the right (female difference). The bar's color tells you which country has more people, and the bar's length shows by how much. For example, if you see a green bar on the left, it means Argentina has more males in that age group.

Notable Differences (>20% variance):

Ages 0-4: Brazil has 408.5% more people

Men: 5.3M more in Brazil • Women: 5.1M more in Brazil

Brazil: 6.6M men, 6.3M women • Argentina: 1.3M men, 1.2M women

Population Ratio

12.9M

2.5M

Ages 5-9: Brazil has 314.9% more people

Men: 5.4M more in Brazil • Women: 5.2M more in Brazil

Brazil: 7.1M men, 6.9M women • Argentina: 1.7M men, 1.6M women

Population Ratio

14.0M

3.4M

Ages 10-14: Brazil has 285.6% more people

Men: 5.4M more in Brazil • Women: 5.2M more in Brazil

Brazil: 7.3M men, 7.0M women • Argentina: 1.9M men, 1.8M women

Population Ratio

14.4M

3.7M

Ages 15-19: Brazil has 308.8% more people

Men: 5.6M more in Brazil • Women: 5.5M more in Brazil

Brazil: 7.5M men, 7.2M women • Argentina: 1.8M men, 1.7M women

Population Ratio

14.7M

3.6M

Ages 20-24: Brazil has 346.8% more people

Men: 6.1M more in Brazil • Women: 5.9M more in Brazil

Brazil: 7.8M men, 7.6M women • Argentina: 1.8M men, 1.7M women

Population Ratio

15.5M

3.5M

Ages 25-29: Brazil has 369.3% more people

Men: 6.4M more in Brazil • Women: 6.4M more in Brazil

Brazil: 8.2M men, 8.1M women • Argentina: 1.8M men, 1.7M women

Population Ratio

16.3M

3.5M

Ages 30-34: Brazil has 357.9% more people

Men: 6.2M more in Brazil • Women: 6.3M more in Brazil

Brazil: 8.0M men, 8.0M women • Argentina: 1.8M men, 1.7M women

Population Ratio

16.0M

3.5M

Ages 35-39: Brazil has 400.4% more people

Men: 6.5M more in Brazil • Women: 6.7M more in Brazil

Brazil: 8.2M men, 8.3M women • Argentina: 1.7M men, 1.6M women

Population Ratio

16.5M

3.3M

Ages 40-44: Brazil has 424.2% more people

Men: 6.6M more in Brazil • Women: 6.8M more in Brazil

Brazil: 8.2M men, 8.4M women • Argentina: 1.6M men, 1.6M women

Population Ratio

16.6M

3.2M

Ages 45-49: Brazil has 398.5% more people

Men: 5.9M more in Brazil • Women: 6.2M more in Brazil

Brazil: 7.4M men, 7.7M women • Argentina: 1.5M men, 1.5M women

Population Ratio

15.2M

3.0M

Ages 50-54: Brazil has 411.0% more people

Men: 5.2M more in Brazil • Women: 5.6M more in Brazil

Brazil: 6.5M men, 6.9M women • Argentina: 1.3M men, 1.3M women

Population Ratio

13.4M

2.6M

Ages 55-59: Brazil has 440.2% more people

Men: 4.7M more in Brazil • Women: 5.1M more in Brazil

Brazil: 5.8M men, 6.2M women • Argentina: 1.1M men, 1.1M women

Population Ratio

12.0M

2.2M

Ages 60-64: Brazil has 437.2% more people

Men: 4.2M more in Brazil • Women: 4.7M more in Brazil

Brazil: 5.2M men, 5.8M women • Argentina: 988K men, 1.0M women

Population Ratio

10.9M

2.0M

Ages 65-69: Brazil has 397.4% more people

Men: 3.3M more in Brazil • Women: 3.8M more in Brazil

Brazil: 4.1M men, 4.8M women • Argentina: 846K men, 949K women

Population Ratio

8.9M

1.8M

Ages 70-74: Brazil has 348.3% more people

Men: 2.3M more in Brazil • Women: 2.9M more in Brazil

Brazil: 3.0M men, 3.7M women • Argentina: 670K men, 823K women

Population Ratio

6.7M

1.5M

Ages 75-79: Brazil has 291.3% more people

Men: 1.4M more in Brazil • Women: 1.9M more in Brazil

Brazil: 1.9M men, 2.5M women • Argentina: 475K men, 659K women

Population Ratio

4.4M

1.1M

Ages 80-84: Brazil has 250.1% more people

Men: 785K more in Brazil • Women: 1.1M more in Brazil

Brazil: 1.1M men, 1.5M women • Argentina: 278K men, 459K women

Population Ratio

2.6M

737K

Ages 85-89: Brazil has 213.7% more people

Men: 346K more in Brazil • Women: 512K more in Brazil

Brazil: 478K men, 781K women • Argentina: 132K men, 270K women

Population Ratio

1.3M

402K

Ages 90-94: Brazil has 150.7% more people

Men: 101K more in Brazil • Women: 158K more in Brazil

Brazil: 148K men, 283K women • Argentina: 47K men, 125K women

Population Ratio

430K

172K

Ages 95-99: Brazil has 76.1% more people

Men: 19K more in Brazil • Women: 20K more in Brazil

Brazil: 30K men, 59K women • Argentina: 11K men, 39K women

Population Ratio

89K

50K

195020252025

Population Difference

167.0M

Brazil larger

Growth Since 1950

Brazil

+298.5%

Argentina

+169.4%

Population Ratio

1 : 0.22

Brazil : Argentina

Metric	Brazil	Argentina	Difference
Total Population	212.8M	45.9M	+364.1%
Median Age	35.8 years	33.9 years	+1.9
Youth Population (0-14)	41.3M 19.4%	9.6M 21.0%	+328.2%
Working Age (15-64)	147.1M 69.1%	30.4M 66.3%	+383.6%
Elderly Population (65+)	24.4M 11.5%	5.8M 12.6%	+321.7%
Total Dependency Ratio	44.6 per 100	50.7 per 100	-6.1
Youth Dependency Ratio	28.0 per 100	31.7 per 100	-3.6
Old-Age Dependency Ratio	16.6 per 100	19.0 per 100	-2.4
Sex Ratio	96.8 M/100F	98.6 M/100F	-1.8
Population Structure Type	Stationary	Stationary	Same

Total Population

Brazil

212.8M

Argentina

45.9M

Difference: +364.1%

Median Age

Brazil

35.8 years

Argentina

33.9 years

Difference: +1.9

Youth Population (0-14)

Brazil

41.3M

19.4%

Argentina

9.6M

21.0%

Difference: +328.2%

Working Age (15-64)

Brazil

147.1M

69.1%

Argentina

30.4M

66.3%

Difference: +383.6%

Elderly Population (65+)

Brazil

24.4M

11.5%

Argentina

5.8M

12.6%

Difference: +321.7%

Total Dependency Ratio

Brazil

44.6 per 100

Argentina

50.7 per 100

Difference: -6.1

Youth Dependency Ratio

Brazil

28.0 per 100

Argentina

31.7 per 100

Difference: -3.6

Old-Age Dependency Ratio

Brazil

16.6 per 100

Argentina

19.0 per 100

Difference: -2.4

Sex Ratio

Brazil

96.8 M/100F

Argentina

98.6 M/100F

Difference: -1.8

Note: Dependency ratios represent the number of dependents (youth + elderly) per 100 working-age individuals. Higher ratios indicate greater economic burden on the working population.

Current Gap

0.12

births per woman

Below Replacement Level

Both

Population decline risk

2030 Projection Gap

0.07

Both trending below replacement

Note: The replacement fertility rate of 2.1 is the level at which a population exactly replaces itself from one generation to the next.Both countries are experiencing demographic transitions as they develop economically. Countries below 2.1 face potential population decline without immigration, while those above 2.1 continue growing naturally.

🏆

Historic Milestone: 2023

Argentina became the world's most populous country, ending Brazil's centuries-long reign

Brazil: 75-Year Journey

1950 Population:53M

2025 Population:213M

Total Growth:+159M (298.5%)

Peak Year:Still growing (~2041 peak)

Argentina: 75-Year Journey

1950 Population:17M

2025 Population:46M

Total Growth:+29M (169.4%)

Projected Peak:Still growing

Growth Rate by Period

1950-1975

Brazil: 2.84%/yr

Argentina: 1.69%/yr

1975-2000

Brazil: 1.94%/yr

Argentina: 1.46%/yr

2000-2025

Brazil: 0.81%/yr

Argentina: 0.84%/yr

Frequently Asked Questions

India officially overtook China as the world's most populous country in April 2023, according to United Nations estimates. This historic shift ended China's long reign as the world's most populous nation, a position it had held for centuries. As of 2025, India has 45.9 million people compared to China's 212.8 million, a gap of -166,961,028 people.