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United States

United States of America
Flag of the United States
Great Seal of the United States
Flag Great Seal
Projection of North America with the United States in green
The United States and its territories
The United States and its territories
Capital Washington, D.C.
38°53′N 77°01′W / 38.883°N 77.017°W / 38.883; -77.017
Largest city New York City
40°43′N 74°00′W / 40.717°N 74.000°W / 40.717; -74.000
Official languages None at federal level
National language English
Ethnic groups Race:
73.1% White
12.7% Black
7.9% Other/multiracial
5.4% Asian
0.8% Native
0.2% Pacific Islander
17.6% Hispanic or Latino
82.4% non-Hispanic or Latino
17.1% German
14.6% African American
11.6% Irish
10.9% Mexican
9.0% English
Religion 70.6% Christian
22.8% Irreligious
1.9% Jewish
0.9% Muslim
0.7% Hindu
0.7% Buddhist
1.8% other faiths
Demonym American
Government Federal presidential constitutional republic
• President
Barack Obama
Joe Biden
Paul Ryan
John Roberts
Legislature Congress
House of Representatives
July 4, 1776
March 1, 1781
September 3, 1783
June 21, 1788
March 24, 1976
• Total area
9,833,517 km2 (3,796,742 sq mi) (3rd/4th)
• Water (%)
• Total land area
9,147,593 km2
3,531,905 sq mi
• 2016 estimate
324,720,797 (3rd)
• 2010 census
309,349,689 (3rd)
• Density
35/km2 (90.6/sq mi) (180th)
GDP (PPP) 2016 estimate
• Total
$18.558 trillion (2nd)
• Per capita
$57,220 (10th)
GDP (nominal) 2016 estimate
• Total
$18.558 trillion (1st)
• Per capita
$57,220 (6th)
Gini (2013) 40.8
HDI (2014) Increase 0.915
very high · 8th
Currency United States dollar ($) (USD)
Time zone (UTC−4 to −12, +10, +11)
• Summer (DST)
 (UTC−4 to −10)
Date format MM/DD/YYYY
Drives on the right
Calling code +1
ISO 3166 code US
Internet TLD .us   .gov   .mil   .edu
  1. ^ English is the official language of 32 states; English and Hawaiian are both official languages in Hawaii, and English and 20 Native American languages are official in Alaska. Algonquian, Cherokee, and Sioux are among many other official languages in Native-controlled lands throughout the country. French is a de facto, but unofficial, language in Maine and Louisiana, while New Mexico law grants Spanish a special status.
  2. ^ In five territories, English as well as one or more indigenous languages are official: Spanish in Puerto Rico, Samoan in American Samoa, Chamorro in both Guam and the Northern Mariana Islands. Carolinian is also an official language in the Northern Mariana Islands.
  3. ^ Not including Hispanic or Latino ethnicity, see Race and ethnicity in the United States for more information.
  4. ^ Whether the United States or China is larger has been disputed. The figure given is from the U.S. Census and United Nations.
  5. ^ See Time in the United States for details about laws governing time zones in the United States.
  6. ^ Except American Samoa and the Virgin Islands.
Race/Ethnicity (2015 ACS estimates)
By race:
White 73.1%
Black 12.7%
Asian 5.4%
Some other race 4.8%
Multiracial 3.1%
American Indian and Alaska Native 0.8%
Native Hawaiian and Pacific Islander 0.2%
By ethnicity:
Hispanic/Latino (of any race) 17.6%
Non-Hispanic/Latino (of any race) 82.4%
Leading population centers (see complete list)
Rank Core city (cities) Metro area population Metropolitan Statistical Area Region
New York City
New York City

Los Angeles
Los Angeles



1 New York 20,182,305 New York–Newark–Jersey City, NY–NJ–PA MSA Northeast
2 Los Angeles 13,340,068 Los Angeles–Long Beach–Santa Ana, CA MSA West
3 Chicago 9,551,031 Chicago–Joliet–Naperville, IL–IN–WI MSA Midwest
4 Dallas–Fort Worth 7,102,796 Dallas–Fort Worth–Arlington, TX MSA South
5 Houston 6,656,947 Houston–The Woodlands-Sugar Land MSA South
6 Washington, D.C. 6,097,684 Washington, DC–VA–MD–WV MSA South
7 Philadelphia 6,069,875 Philadelphia–Camden–Wilmington, PA–NJ–DE–MD MSA Northeast
8 Miami 6,012,331 Miami–Fort Lauderdale–Pompano Beach, FL MSA South
9 Atlanta 5,710,795 Atlanta–Sandy Springs–Roswell, GA MSA South
10 Boston 4,774,321 Boston–Cambridge–Quincy, MA–NH MSA Northeast
11 San Francisco 4,656,132 San Francisco–Oakland–Fremont, CA MSA West
12 Phoenix 4,574,531 Phoenix–Mesa–Glendale, AZ MSA West
13 Riverside–San Bernardino 4,489,159 Riverside–San Bernardino–Ontario, CA MSA West
14 Detroit 4,302,043 Detroit–Warren–Livonia, MI MSA Midwest
15 Seattle 3,733,580 Seattle–Tacoma–Bellevue, WA MSA West
16 Minneapolis–St. Paul 3,524,583 Minneapolis–St. Paul–Bloomington, MN–WI MSA Midwest
17 San Diego 3,299,521 San Diego–Carlsbad–San Marcos, CA MSA West
18 Tampa–St. Petersburg 2,975,225 Tampa–St. Petersburg–Clearwater, FL MSA South
19 Denver 2,814,330 Denver–Aurora–Lakewood, CO MSA West
20 St. Louis 2,811,588 St. Louis MO–IL MSA Midwest
Based on 2015 population estimates from the U.S. Census Bureau
Economic indicators
Nominal GDP $18.45 trillion (Q2 2016)
Real GDP growth 1.4% (Q2 2016)
2.6% (2015)
CPI inflation 1.1% (August 2016)
Employment-to-population ratio 59.7% (August 2016)
Unemployment 4.9% (August 2016)
Labor force participation rate 62.8% (August 2016)
Total public debt $19.808 trillion (October 25, 2016)
Household net worth $89.063 trillion (Q2 2016)

Coordinates: 40°N 100°W / 40°N 100°W / 40; -100

The United States of America (USA), commonly referred to as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.Forty-eight of the fifty states and the federal district are contiguous and located in North America between Canada and Mexico. The state of Alaska is in the northwest corner of North America, bordered by Canada to the east and across the Bering Strait from Russia to the west. The state of Hawaii is an archipelago in the mid-Pacific Ocean. The U.S. territories are scattered about the Pacific Ocean and the Caribbean Sea. Nine time zones are covered. The geography, climate and wildlife of the country are extremely diverse.