President:
Barack H. Obama is the president of the USA,at present.
Vice President:
Joseph Biden is the vice president of USA.
Total Area:
The total area covered by USA is 3,718,691 sq mi (9,631,420 sq km)
Land Area:
The land area of USA is 3,539,225 sq mi (9,166,601 sq km).
Population (2010 est.):
The total population in the USA is 310,232,863
Growth Rate: 0.9%
birth Rate: 13.8/1000
Infant Mortality rate: 6.1/1000
Life Expectancy: 78.2
Density per sq mi: 85
Capital(2003 est.)
Washington, DC, 570,898
Largest cities (2003 est.):
New York, 18,498,000 (metro area), 8,085,742 (city proper); Los Angeles, 12,146,000 (metro area), 3,819,951 (city proper); Chicago, 8,711,000 (metro area), 2,869,121 (city proper); Houston, 2,009,960; Philadelphia, 1,479,339; Phoenix, 1,388,416; San Diego, 1,226,753; San Antonio, 1,214,725; Dallas, 1,208,318; Detroit, 911,402
Monetary unit:
Dollar
