Population:
307,212,123 (July 2009 est.)

Age structure:
0-14 years: 20.2% (male 31,639,127/female 30,305,704)
15-64 years: 67% (male 102,665,043/female 103,129,321)
65 years and over: 12.8% (male 16,901,232/female 22,571,696) (2009 est.)

Median age:
total: 36.7 years
male: 35.4 years
female: 38 years (2009 est.)

Population growth rate:
0.977% (2009 est.)

Birth rate:
13.83 births/1,000 population (2009 est.)

Death rate:
8.38 deaths/1,000 population (July 2009 est.)

Net migration rate:
4.32 migrant(s)/1,000 population (2009 est.)

Urbanization:
urban population: 82% of total population (2008)
rate of urbanization: 1.3% annual rate of change (2005-10 est.)

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: 0.75 male(s)/female
total population: 0.97 male(s)/female (2009 est.)

Infant mortality rate:
total: 6.22 deaths/1,000 live births
male: 6.9 deaths/1,000 live births
female: 5.51 deaths/1,000 live births (2009 est.)

Life expectancy at birth:
total population: 78.11 years
male: 75.65 years
female: 80.69 years (2009 est.)

Total fertility rate:
2.05 children born/woman (2009 est.)

HIV/AIDS - adult prevalence rate:
0.6% (2007 est.)

HIV/AIDS - people living with HIV/AIDS:
1.2 million (2007 est.)

HIV/AIDS - deaths:
22,000 (2007 est.)

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: 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: 16 years (2006)

Education expenditures:
5.3% of GDP (2005)