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T
FactSheet
The Demographic Facts of Life
United States
308 million
33
36.6
3 million
0.9%
78 years
2.02
35.8
77.7 (male), 82.1 (female)
4.4 million
5.5
50
30
19
404 million
79%
68%
19
Population
Population Density (people per
square kilometer)
Median Age
Population Increase Per Year
Population Growth Rate
Doubling Time
Total Fertility Rate
Births per 1,000 Women 15-19
Life Expectancy
Births per Year
Infant Morality Rate (infant deaths
per 1,000 live births)
Total Dependency Ratio
Child Dependency Ratio
Elderly Dependency Ratio
Projected Population, 2050
Urban Population
Married Women Using Modern
Contraception
Metric Tons of Annual CO
2
Emissions per capita
World
6.8 billion
51
29.1
79 million
1.11%
63 years
2.49
52
66.7 (male), 71.1 (female)
137.9 million
43.2
53
41
12
9.1 billion
50%
55%
4.1
Sources and definitions on reverse
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Sources:
U.S. and World Population Clocks, U.S. Census Bureau, www.census.gov/main/www/popclock.html
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- Spring '11
- DaveHooper
- Demography, World population, dependency ratio
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