| Population | 313,847,465 (July 2012 est.) |
| Age structure | 0-14 years: 20% (male 32,050,686/female 30,719,945)
15-24 years: 13.8% (male 22,112,002/female 21,174,050)
25-54 years: 40.6% (male 63,713,761/female 63,556,345)
55-64 years: 12.1% (male 18,331,065/female 19,711,907)
65 years and over: 13.5% (male 18,424,785/female 24,052,919) (2012 est.) |
| Median age | total: 37.1 years
male: 35.8 years
female: 38.5 years (2012 est.) |
| Population growth rate | 0.9% (2012 est.) |
| Birth rate | 13.7 births/1,000 population (2012 est.) |
| Death rate | 8.4 deaths/1,000 population (July 2012 est.) |
| Net migration rate | 3.62 migrant(s)/1,000 population (2012 est.) |
| 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: 1.05 male(s)/female
under 15 years: 1.04 male(s)/female
15-64 years: 1 male(s)/female
65 years and over: 0.77 male(s)/female
total population: 0.97 male(s)/female (2011 est.) |
| Infant mortality rate | total: 6 deaths/1,000 live births
male: 6.6 deaths/1,000 live births
female: 5.3 deaths/1,000 live births (2012 est.) |
| Life expectancy at birth | total population: 78.49 years
male: 76.05 years
female: 81.05 years (2012 est.) |
| Total fertility rate | 2.06 children born/woman (2012 est.) |
| HIV/AIDS - adult prevalence rate | 0.6% (2009 est.) |
| HIV/AIDS - people living with HIV/AIDS | 1.2 million (2009 est.) |
| HIV/AIDS - deaths | 17,000 (2009 est.) |
| 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 |
| Nationality | noun: American(s)
adjective: American |
| Ethnic groups | white 79.96%, black 12.85%, Asian 4.43%, Amerindian and Alaska native 0.97%, native Hawaiian and other Pacific islander 0.18%, two or more races 1.61% (July 2007 estimate)
note: a separate listing for Hispanic is not included because the US Census Bureau considers Hispanic to mean persons of Spanish/Hispanic/Latino origin including those of Mexican, Cuban, Puerto Rican, Dominican Republic, Spanish, and Central or South American origin living in the US who may be of any race or ethnic group (white, black, Asian, etc.); about 15.1% of the total US population is Hispanic |
| Religions | Protestant 51.3%, Roman Catholic 23.9%, Mormon 1.7%, other Christian 1.6%, Jewish 1.7%, Buddhist 0.7%, Muslim 0.6%, other or unspecified 2.5%, unaffiliated 12.1%, none 4% (2007 est.) |
| Languages | English 82.1%, Spanish 10.7%, other Indo-European 3.8%, Asian and Pacific island 2.7%, other 0.7% (2000 census)
note: the US has no official national language, but English has acquired official status in 28 of the 50 states; Hawaiian is an official language in the state of Hawaii |
| 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) |
| Education expenditures | 5.5% of GDP (2007) |
| Maternal mortality rate | 21 deaths/100,000 live births (2010) |
| Children under the age of 5 years underweight | 1.3% (2002) |
| 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) |
| Obesity - adult prevalence rate | 33.9% (2006) |
