Population:
313,232,044 (July 2011 est.) country comparison to the world: 3
Age structure:
0-14 years: 20.1% (male 32,107,900/female 30,781,823) 15-64 years: 66.8% (male 104,411,352/female 104,808,064) 65 years and over: 13.1% (male 17,745,363/female 23,377,542) (2011 est.)
Median age:
total: 36.9 years male: 35.6 years female: 38.2 years (2011 est.)
Population growth rate:
0.963% (2011 est.) country comparison to the world: 118
Birth rate:
13.83 births/1,000 population (2011 est.) country comparison to the world: 148
Death rate:
8.38 deaths/1,000 population (July 2011 est.) country comparison to the world: 89
Net migration rate:
4.18 migrant(s)/1,000 population (2011 est.) country comparison to the world: 23
Urbanization:
urban population: 82% of total population (2010) rate of urbanization: 1.2% annual rate of change (2010-15 est.)
Major cities - population:
New York-Newark 19.3 million; Los Angeles-Long Beach-Santa Ana 12.675 million; Chicago 9.134 million; Miami 5.699 million; WASHINGTON, D.C. (capital) 4.421 million (2009)
Sex ratio:
at birth: 1.047 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years: 1 male(s)/female 65 years and over: 0.75 male(s)/female total population: 0.97 male(s)/female (2011 est.)
Maternal mortality rate:
24 deaths/100,000 live births (2008)
Infant mortality rate:
total: 6.06 deaths/1,000 live births country comparison to the world: 176 male: 6.72 deaths/1,000 live births female: 5.37 deaths/1,000 live births (2011 est.)
Life expectancy at birth:
total population: 78.37 years country comparison to the world: 50 male: 75.92 years female: 80.93 years (2011 est.)
Total fertility rate:
2.06 children born/woman (2011 est.) country comparison to the world: 122
Health expenditures:
16.2% of GDP (2009)
Physicians density:
2.672 physicians/1,000 population (2004)
Hospital bed density:
3.1 beds/1,000 population (2008)
Drinking water source:
improved: urban: 100% of population rural: 94% of population total: 99% of population unimproved: urban: 0% of population rural: 6% of population total: 1% of population (2008)
Sanitation facility access:
improved: urban: 100% of population rural: 99% of population total: 100% of population unimproved: urban: 0% of population rural: 1% of population total: 0% of population (2008)
HIV/AIDS - adult prevalence rate:
0.6% (2009 est.) country comparison to the world: 64
HIV/AIDS - people living with HIV/AIDS:
1.2 million (2009 est.) country comparison to the world: 9
HIV/AIDS - deaths:
17,000 (2009 est.) country comparison to the world: 18
Obesity - adult prevalence rate:
33.9% (2006)
Children under the age of 5 years underweight:
1.3% (2002)
Education expenditures:
5.5% of GDP (2007) country comparison to the world: 43
Literacy:
definition: age 15 and over can read and write total population: 99% male: 99% female: 99% (2003 est.)
School life expectancy (primary to tertiary education):
total: 16 years male: 15 years female: 17 years (2008)