USA

USA
CapitalWashington, D.C.
USA38°53′N 77°01′W
Largest cityNew York City
USA40°43′N 74°00′W
Official languagesNone at the federal level[a]
National languageEnglish
Ethnic groups

(2020)[8]
By race:

By ethnicity:

Religion

(2020)[9]
Demonym(s)American[b][10]
GovernmentFederal presidential constitutional republic
Joe Biden (D)
Kamala Harris (D)
Nancy Pelosi (D)
John Roberts
LegislatureCongress
Senate
House of Representatives
Independence

July 4, 1776
March 1, 1781
September 3, 1783
June 21, 1788
September 25, 1789
August 21, 1959
May 5, 1992
Area
• Total area
3,796,742 sq mi (9,833,520 km2)[c][11] (3rd/4th)
• Water (%)
4.66 (as of 2015)[12]
• Total land area
3,531,905 sq mi (9,147,590 km2)
Population
• 2020 census
Neutral increase 331,449,281[d][13] (3rd)
• Density
87/sq mi (33.6/km2) (146th)
GDP (PPP)2021 estimate
• Total
Increase $22.675 trillion[14] (2nd)
• Per capita
Increase $68,309[14] (7th)
GDP (nominal)2021 estimate
• Total
Increase $22.675 trillion[14] (1st)
• Per capita
Increase $68,309[14] (5th)
Gini (2020)Negative increase 48.5[15]
high
HDI (2019)Increase 0.926[16]
very high · 17th
CurrencyUnited States dollar ($) (USD)
Time zoneUTC−4 to −12, +10, +11
• Summer (DST)
UTC−4 to −10[e]
Date format
  • mm/dd/yyyy
  • yyyymmdd
Mains electricity110–120 V, 60 Hz[17]
Driving sideright[f]
Calling code+1
ISO 3166 codeUS
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