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 1.00 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 1.21 births per woman compared to China's 1.00. 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 41.5 years versus 41.1 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. Thailand is currently in a better position to benefit, with 65% of its population under 35 years old. Thailand's demographic window will remain open for about 20 more years, while China's has already begun closing. However, Thailand 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 China's.

How does population affect GDP for China and Thailand?

Population directly impacts GDP through workforce size and consumption. China currently has a higher GDP per capita, but its aging and shrinking workforce poses challenges. Thailand's growing, younger population provides more workers and consumers, potentially driving economic growth. Economists project that Thailand's economy could surpass China's by 2075 due to demographic advantages. However, Thailand must improve productivity (currently about half of China'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 1.00, well below what's needed for population stability.

Which country has more elderly people?

China has significantly more elderly people both in absolute numbers and percentage. With a median age of 41.1 years, China is aging rapidly - about 13% of its population is over 65, compared to just 7% in Thailand. By 2050, over one-third of China's population will be 65+, creating massive pension and healthcare challenges. Thailand, with a median age of 41.5, has more time to prepare for population aging.

What are the population densities of China vs Thailand?

Thailand is significantly more densely populated than China. With 71.6 million people in 3.3 million km², Thailand has about 448 people per km². China, despite having 1.42 billion people, has 9.6 million km² of land, resulting in just 147 people per km². This makes Thailand over 3 times as densely populated as China, 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 1.21 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 China and Thailand?

Both countries have more males than females, but for different reasons. China'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. Thailand 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.

China vs Thailand: Population Comparison 2025

Middle-income aging trap. Both face getting old before getting rich.

China

2025

Total Population

Thailand

Total Population

Thailand leads by 1.34B people

Gap is 94.94% of China's population

Fertility Rate

1.00vs1.21

Thailand +0.21

Median Age

41.1vs41.5

China younger

Density /km²

148vs22

Thailand 0.1x denser

Working Age %

69.7%vs69.6%

Ages 15-64

China: Declining Population

Thailand: Stable Population

Replacement Level: 2.1

Population Pyramids Comparison

Total Population

China

1416.1M

Thailand

71.6M

Youth (0-14)

China

15.4%

Thailand

14.4%

Elderly (65+)

China

14.9%

Thailand

16.0%

Demographic Analysis: China vs Thailand

In 2025, China has a population of 1.42B, while Thailand has 72M. This represents a difference of 1.34B, with China having 19.8 times the population of the other. China ranks #2 globally by population size, while Thailand ranks #20.

The median age reveals significant demographic differences: China has a median age of 41.1 years, compared to 41.5 years in Thailand. This 0.4-year difference indicates that Thailand has a significantly older population, with important implications for workforce dynamics, healthcare needs, and economic development. The dependency ratio in China is 43.5%, while in Thailand it is 43.7%, showing the relative burden of non-working age populations on the workforce.

Gender balance differs between the two countries: China has a sex ratio of 103.69 males per female, while Thailand has 94.71. China 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	China	Thailand	Difference / Ratio
Population Metrics
Total Population (2025)	1.42B	72M	19.8x larger
World Population Ranking	#2	#20	18 places apart
Population Growth Rate (5-year)	-0.14%	-0.01%	0.13pp difference
Projected Growth (2025-2050)	0.00%	0.00%	0.00pp difference
Age Structure
Median Age	41.1 years	41.5 years	0.4 years younger
Youth (0-14) Population	15.4%	14.4%	1.0pp difference
Working Age (15-64) Population	69.7%	69.6%	0.1pp difference
Elderly (65+) Population	14.9%	16.0%	1.1pp difference
Youth Bulge (15-29)	17.4%	19.4%	2.0pp difference
Prime Workforce (25-54)	43.3%	43.0%	0.2pp difference
Demographic Indicators
Total Dependency Ratio	43.5%	43.7%	0.2pp difference
Child Dependency Ratio	22.1%	20.7%	1.4pp difference
Old-Age Dependency Ratio	21.4%	23.0%	1.6pp difference
Sex Ratio (males per 100 females)	103.7	94.7	9.0 difference
Total Fertility Rate	1.00 children/woman	1.21 children/woman	0.21 difference
Estimated Birth Rate	6.7 per 1,000	8.3 per 1,000	1.6 difference
Aging Index (65+/0-14)	96.8%	111.1%	14.3pp difference
Population Pyramid Type	stationary	constrictive	Different types

📊 Understanding the Population Difference Chart

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

Left Side (Males)

Blue = China has more males

Green = Thailand has more males

Right Side (Females)

Pink = China has more females

Orange = Thailand 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 Thailand has more males in that age group.

Notable Differences (>20% variance):

Ages 0-4: China has 1499.6% more people

Men: 23.4M more in China • Women: 21.1M more in China

China: 24.9M men, 22.6M women • Thailand: 1.5M men, 1.4M women

Population Ratio

47.5M

3.0M

Ages 5-9: China has 2265.8% more people

Men: 41.0M more in China • Women: 35.9M more in China

China: 42.7M men, 37.6M women • Thailand: 1.7M men, 1.6M women

Population Ratio

80.3M

3.4M

Ages 10-14: China has 2182.7% more people

Men: 46.5M more in China • Women: 39.9M more in China

China: 48.5M men, 41.8M women • Thailand: 2.0M men, 1.9M women

Population Ratio

90.3M

4.0M

Ages 15-19: China has 1893.0% more people

Men: 43.5M more in China • Women: 36.9M more in China

China: 45.7M men, 39.0M women • Thailand: 2.2M men, 2.1M women

Population Ratio

84.7M

4.2M

Ages 20-24: China has 1592.0% more people

Men: 40.1M more in China • Women: 34.0M more in China

China: 42.5M men, 36.3M women • Thailand: 2.4M men, 2.3M women

Population Ratio

78.8M

4.7M

Ages 25-29: China has 1568.1% more people

Men: 41.8M more in China • Women: 36.0M more in China

China: 44.4M men, 38.4M women • Thailand: 2.5M men, 2.4M women

Population Ratio

82.8M

5.0M

Ages 30-34: China has 1846.4% more people

Men: 49.6M more in China • Women: 43.9M more in China

China: 52.1M men, 46.5M women • Thailand: 2.5M men, 2.5M women

Population Ratio

98.6M

5.1M

Ages 35-39: China has 2341.5% more people

Men: 60.8M more in China • Women: 55.8M more in China

China: 63.3M men, 58.2M women • Thailand: 2.5M men, 2.5M women

Population Ratio

121.5M

5.0M

Ages 40-44: China has 1862.7% more people

Men: 50.1M more in China • Women: 47.2M more in China

China: 52.7M men, 49.8M women • Thailand: 2.6M men, 2.6M women

Population Ratio

102.5M

5.2M

Ages 45-49: China has 1655.3% more people

Men: 44.5M more in China • Women: 42.6M more in China

China: 47.1M men, 45.3M women • Thailand: 2.6M men, 2.7M women

Population Ratio

92.4M

5.3M

Ages 50-54: China has 2057.3% more people

Men: 55.5M more in China • Women: 54.2M more in China

China: 58.0M men, 57.0M women • Thailand: 2.5M men, 2.8M women

Population Ratio

115.1M

5.3M

Ages 55-59: China has 2105.6% more people

Men: 55.6M more in China • Women: 55.8M more in China

China: 58.1M men, 58.6M women • Thailand: 2.5M men, 2.8M women

Population Ratio

116.7M

5.3M

Ages 60-64: China has 1851.6% more people

Men: 43.8M more in China • Women: 45.2M more in China

China: 46.0M men, 47.7M women • Thailand: 2.2M men, 2.6M women

Population Ratio

93.7M

4.8M

Ages 65-69: China has 1645.6% more people

Men: 31.5M more in China • Women: 34.5M more in China

China: 33.4M men, 36.7M women • Thailand: 1.8M men, 2.2M women

Population Ratio

70.1M

4.0M

Ages 70-74: China has 2068.8% more people

Men: 28.4M more in China • Women: 33.7M more in China

China: 29.8M men, 35.4M women • Thailand: 1.3M men, 1.7M women

Population Ratio

65.1M

3.0M

Ages 75-79: China has 1818.0% more people

Men: 16.5M more in China • Women: 20.5M more in China

China: 17.3M men, 21.7M women • Thailand: 870K men, 1.2M women

Population Ratio

39.1M

2.0M

Ages 80-84: China has 1636.4% more people

Men: 8.4M more in China • Women: 11.7M more in China

China: 8.9M men, 12.4M women • Thailand: 498K men, 733K women

Population Ratio

21.4M

1.2M

Ages 85-89: China has 1373.7% more people

Men: 3.8M more in China • Women: 6.4M more in China

China: 4.1M men, 6.9M women • Thailand: 281K men, 463K women

Population Ratio

11.0M

744K

Ages 90-94: China has 1065.5% more people

Men: 1.0M more in China • Women: 2.5M more in China

China: 1.2M men, 2.7M women • Thailand: 117K men, 216K women

Population Ratio

3.9M

334K

Ages 95-99: China has 578.5% more people

Men: 97K more in China • Women: 451K more in China

China: 128K men, 514K women • Thailand: 32K men, 63K women

Population Ratio

643K

95K

Ages 100+: China has 208.0% more people

Men: 1K more in Thailand • Women: 34K more in China

China: 4K men, 45K women • Thailand: 5K men, 11K women

Population Ratio

49K

16K

195020252025

Population Difference

1344.5M

China larger

Growth Since 1950

China

+160.3%

Thailand

+250.6%

Population Ratio

1 : 0.05

China : Thailand

Metric	China	Thailand	Difference
Total Population	1.42B	71.6M	+1877.2%
Median Age	41.1 years	41.5 years	-0.4
Youth Population (0-14)	218.2M 15.4%	10.3M 14.4%	+2013.5%
Working Age (15-64)	986.8M 69.7%	49.8M 69.6%	+1880.4%
Elderly Population (65+)	211.2M 14.9%	11.5M 16.0%	+1740.7%
Total Dependency Ratio	43.5 per 100	43.7 per 100	-0.2
Youth Dependency Ratio	22.1 per 100	20.7 per 100	+1.4
Old-Age Dependency Ratio	21.4 per 100	23.0 per 100	-1.6
Sex Ratio	103.7 M/100F	94.7 M/100F	+9.0
Population Structure Type	Stationary	Constrictive	Different

Total Population

China

1.42B

Thailand

71.6M

Difference: +1877.2%

Median Age

China

41.1 years

Thailand

41.5 years

Difference: -0.4

Youth Population (0-14)

China

218.2M

15.4%

Thailand

10.3M

14.4%

Difference: +2013.5%

Working Age (15-64)

China

986.8M

69.7%

Thailand

49.8M

69.6%

Difference: +1880.4%

Elderly Population (65+)

China

211.2M

14.9%

Thailand

11.5M

16.0%

Difference: +1740.7%

Total Dependency Ratio

China

43.5 per 100

Thailand

43.7 per 100

Difference: -0.2

Youth Dependency Ratio

China

22.1 per 100

Thailand

20.7 per 100

Difference: +1.4

Old-Age Dependency Ratio

China

21.4 per 100

Thailand

23.0 per 100

Difference: -1.6

Sex Ratio

China

103.7 M/100F

Thailand

94.7 M/100F

Difference: +9.0

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

0.21

births per woman

Below Replacement Level

Both

Population decline risk

2030 Projection Gap

0.00

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

Thailand became the world's most populous country, ending China's centuries-long reign

China: 75-Year Journey

1950 Population:544M

2025 Population:1.42B

Total Growth:+872M (160.3%)

Peak Year:2021 (Started declining)

Thailand: 75-Year Journey

1950 Population:20M

2025 Population:72M

Total Growth:+51M (250.6%)

Projected Peak:Still growing

Growth Rate by Period

1950-1975

China: 2.11%/yr

Thailand: 2.82%/yr

1975-2000

China: 1.31%/yr

Thailand: 1.74%/yr

2000-2025

China: 0.44%/yr

Thailand: 0.51%/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 71.6 million people compared to China's 1.42 billion, a gap of -1,344,476,237 people.