United States vs China: Population Comparison 2025
Compare USA and China population structures. Age distribution, sex ratios, demographic trends, and population pyramid comparison with 2025 data.
United States
China
Population Pyramids Comparison
Total Population
United States
347.3M
China
1416.1M
Youth (0-14)
United States
17.1%
China
15.4%
Elderly (65+)
United States
18.4%
China
14.9%
Demographic Analysis: United States vs China
In 2025, United States has a population of 347M, while China has 1.42B. This represents a difference of 1.07B, with China having 4.1 times the population of the other. United States ranks #3 globally by population size, while China ranks #2.
The median age reveals significant demographic differences: United States has a median age of 39.5 years, compared to 41.1 years in China. This 1.6-year difference indicates that China has a significantly older population, with important implications for workforce dynamics, healthcare needs, and economic development. The dependency ratio in United States is 55.0%, while in China it is 43.5%, showing the relative burden of non-working age populations on the workforce.
Gender balance differs between the two countries: United States has a sex ratio of 100.99 males per female, while China has 103.69. 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 | United States | China | Difference / Ratio |
|---|---|---|---|
| Population Metrics | |||
| Total Population (2025) | 347M | 1.42B | 4.1x smaller |
| World Population Ranking | #3 | #2 | 1 places apart |
| Population Growth Rate (5-year) | +0.46% | -0.14% | 0.60pp difference |
| Projected Growth (2025-2050) | 0.00% | 0.00% | 0.00pp difference |
| Age Structure | |||
| Median Age | 39.5 years | 41.1 years | 1.6 years younger |
| Youth (0-14) Population | 17.1% | 15.4% | 1.7pp difference |
| Working Age (15-64) Population | 64.5% | 69.7% | 5.2pp difference |
| Elderly (65+) Population | 18.4% | 14.9% | 3.5pp difference |
| Youth Bulge (15-29) | 19.7% | 17.4% | 2.3pp difference |
| Prime Workforce (25-54) | 39.1% | 43.3% | 4.1pp difference |
| Demographic Indicators | |||
| Total Dependency Ratio | 55.0% | 43.5% | 11.5pp difference |
| Child Dependency Ratio | 26.5% | 22.1% | 4.4pp difference |
| Old-Age Dependency Ratio | 28.5% | 21.4% | 7.1pp difference |
| Sex Ratio (males per 100 females) | 101.0 | 103.7 | 2.7 difference |
| Total Fertility Rate | 1.60 children/woman | 1.00 children/woman | 0.60 difference |
| Estimated Birth Rate | 10.7 per 1,000 | 6.7 per 1,000 | 4.0 difference |
| Aging Index (65+/0-14) | 107.5% | 96.8% | 10.8pp difference |
| Population Pyramid Type | constrictive | stationary | Different types |
📊 Understanding the Population Difference Chart
This visualization shows where and by how much the populations differ between United States and China for each age group, split by gender:
Left Side (Males)
Blue = United States has more males
Green = China has more males
Right Side (Females)
Pink = United States has more females
Orange = China 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 China has more males in that age group.
Notable Differences (>20% variance):
Population Difference
-1068.8M
China larger
Growth Since 1950
United States
+125.2%
China
+160.3%
Population Ratio
1 : 4.08
United States : China
| Metric | United States | China | Difference |
|---|---|---|---|
| Total Population | 347.3M | 1.42B | -75.5% |
| Median Age | 39.5 years | 41.1 years | -1.6 |
| Youth Population (0-14) | 59.4M 17.1% | 218.2M 15.4% | -72.8% |
| Working Age (15-64) | 224.0M 64.5% | 986.8M 69.7% | -77.3% |
| Elderly Population (65+) | 63.9M 18.4% | 211.2M 14.9% | -69.8% |
| Total Dependency Ratio | 55.0 per 100 | 43.5 per 100 | +11.5 |
| Youth Dependency Ratio | 26.5 per 100 | 22.1 per 100 | +4.4 |
| Old-Age Dependency Ratio | 28.5 per 100 | 21.4 per 100 | +7.1 |
| Sex Ratio | 101.0 M/100F | 103.7 M/100F | -2.7 |
| Population Structure Type | Constrictive | Stationary | Different |
Total Population
United States
347.3M
China
1.42B
Median Age
United States
39.5 years
China
41.1 years
Youth Population (0-14)
United States
59.4M
17.1%
China
218.2M
15.4%
Working Age (15-64)
United States
224.0M
64.5%
China
986.8M
69.7%
Elderly Population (65+)
United States
63.9M
18.4%
China
211.2M
14.9%
Total Dependency Ratio
United States
55.0 per 100
China
43.5 per 100
Youth Dependency Ratio
United States
26.5 per 100
China
22.1 per 100
Old-Age Dependency Ratio
United States
28.5 per 100
China
21.4 per 100
Sex Ratio
United States
101.0 M/100F
China
103.7 M/100F
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.
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
China became the world's most populous country, ending United States's centuries-long reign