| Capital | Washington, D.C. |
| Official language(s) | None at federal level; English de facto |
Government President Vice President | Federal republic Representative democracy George W. Bush (R) Dick Cheney (R) |
Independence Declared Recognized | From the British July 4, 1776 September 3, 1783 |
Constitution Completed Ratified Effective | September 17, 1787 May 23, 1788 March 4, 1789 |
| Area | 9,631,418 km˛ (3rd) |
| Largest city | New York City |
Population 2006 est. 2000 census 2000 census Density | 299,598,000 (3rd) 281,421,906 32/km˛ (140th) 83/mi˛ |
GDP (PPP) Total Per capita | 2006 estimate $12.370 trillion (1st) $41,800 (4th) |
| Currency | Dollar ($) (USD) |
Time zone Summer (DST) | (UTC-5 to -10) (UTC-4 to -10) |
| Internet TLD | .us .gov .edu .mil .um |
| Calling code | 1 |