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United States

Facts & Figures

President: Barack H. Obama (2009)

Vice President: Joseph Biden (2009)

Land area: 3,539,225 sq mi (9,166,601 sq km); total area: 3,718,691 sq mi (9,631,420 sq km)

Population (2012 est.): 313,847,465 (growth rate: 0.899%); birth rate: 13.68/1000; infant mortality rate: 5.9/1000; life expectancy: 78.49; density per sq mi: 85

Capital (2010 est.): Washington, DC, 601,723

Largest cities (2010 est.): New York, 8,175,133; Los Angeles, 3,792,621; Chicago, 2,695,598; Houston, 2,099,451; Philadelphia, 1,526,006; Phoenix, 1,445,632; San Antonio, 1,327,407; San Diego, 1,307,402; Dallas, 1,197,816; San Jose, 945,942

Monetary unit: dollar

More Facts & Figures

Flag of United States

The United States of America


Federal republic.

The president is elected for a four-year term and may be reelected only once. The bicameral Congress consists of the 100-member Senate, elected to a six-year term with one-third of the seats becoming vacant every two years, and the 435-member House of Representatives, elected every two years. The minimum voting age is 18.

See also United States territories.
See also Encyclopedia: United States .

See also:
U.S. Geography
Current Events
Profile of the United States
U.S. States
U.S. Cities
U.S. Statistics
U.S. Government and History
U.S. History Timeline
Society & Culture
Health Statistics
Gender Issues
Race & Ethnicity
Military Affairs
Business and Finance

United Kingdom Countries Uruguay

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