From Wikipedia, the free encyclopedia
Country located primarily in North America
"America", "US", "USA", and "United States of America" redirect here. For the landmass comprising North, Central, South America, and the Caribbean, see
Americas . For other uses, see
America (disambiguation) ,
US (disambiguation) ,
USA (disambiguation) , and
United States (disambiguation) .
40°N 100°W / 40°N 100°W / 40; -100
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Wikipedia:Good articles .
United States of America
Motto: Anthem:
Great Seal :
Capital Largest city Official languages None at
federal level
[a]
National language
English
Ethnic groups
Demonym(s)
American
[b]
[8]
Government
Federal
presidential
constitutional republic
Donald Trump (
R )
Mike Pence (
R )
Nancy Pelosi (
D )
John Roberts
Legislature
Congress
Senate
House of Representatives July 4, 1776 March 1, 1781 September 3, 1783 June 21, 1788 September 25, 1789 August 21, 1959
[d] May 5, 1992
• Total area
3,796,742 sq mi (9,833,520 km2 )
[e]
[9] (
3rd/4th ) • Water (%)
6.97 • Total land area
3,531,905 sq mi (9,147,590 km2 ) • 2019 estimate
328,239,523
[7] (
3rd )• 2010 census
308,745,538
[f]
[10] (
3rd ) • Density
87/sq mi (33.6/km2 ) (
146th )
GDP (
PPP ) 2020 estimate • Total
$22.321 trillion
[11] (
2nd )• Per capita
$67,426
[11] (
11th )
GDP (nominal) 2020 estimate • Total
$22.321 trillion
[11] (
1st )• Per capita
$67,426
[11] (
7th )
Gini (2017) 39.0
[12] medium (
56th )
HDI (2018) 0.920
[13] very high (
15th )Currency [[]] ($) (
USD ) Time zone
UTC −4 to −12, +10, +11
UTC −4 to −10
[g] Date format
mm /
dd /
yyyy
yyyy -
mm -
dd
Driving side right
[h]
Calling code
+1
ISO 3166 code
US
Internet TLD
Generic top-level domain
.com ,
.org ,
.net ,
.edu ,
.gov ,
.mil
ccTLD (generally not used in the U.S.)
.us ,
.pr ,
.as ,
.gu ,
.mp ,
.vi and, formerly,
.um (removed by ICANN in 2008, but still recognized by the U.S. government as a ccTLD)
^
36 U.S.C.
§ 302
^
a
b
"The Great Seal of the United States" (PDF) .
U.S. Department of State ,
Bureau of Public Affairs . 2003. Retrieved February 12, 2020 .
^
"uscode.house.gov" . Public Law 105-225 . uscode.house.gov. August 12, 1999. pp. 112 Stat. 1263. Retrieved September 10, 2017 . Section 304. "The composition by John Philip Sousa entitled 'The Stars and Stripes Forever' is the national march."
^
a
b
"U.S. Census Bureau QuickFacts: United States" .
United States Census . Retrieved January 21, 2020 .
^
Compton's Pictured Encyclopedia and Fact-index: Ohio . 1963. p. 336.
^ Areas of the 50 states and the District of Columbia but not Puerto Rico nor other island territories per
"State Area Measurements and Internal Point Coordinates" .
Census.gov . August 2010. Retrieved March 31, 2020 . reflect base feature updates made in the MAF/TIGER database through August, 2010.
^
"Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2016" .
United States Census . Archived from
the original on February 14, 2020. Retrieved July 25, 2017 . The 2016 estimate is as of July 1, 2016. The 2010 census is as of April 1, 2010.
^
a
b
c
d
"World Economic Outlook Database, October 2019" . IMF.org .
International Monetary Fund . Retrieved March 30, 2020 .
^
"Income inequality" . data.oecd.org .
OECD . Retrieved January 8, 2020 .
^
"Human Development Report 2019" (PDF) .
United Nations Development Programme . December 10, 2019. Retrieved December 10, 2019 .
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