Outline of the United States

The following outline is provided as an overview of and topical guide to the United States:

United States of America is a federal republic located primarily in North America, and the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. The United States is considered a major world power.

General reference

Pronunciation: Abbreviations: USA or US Common English country name: United States or America Languages of the United States: English, Spanish, Hawaiian and Native American languages Official English country name: United States of America Common endonyms: United States, U.S., U.S.A., America Official endonym: United States of America Common exonyms: United States; America or The States (chiefly British/Commonwealth); North America (chiefly Latin America) Adjectivals: United States, American Demonyms: American (among others) Etymology International rankings of the United States ISO country codes: US, USA, 840 ISO region codes: See ISO 3166-2:US Internet country code top-level domain: .us, .com, .org, .net, .gov, .edu

Geography of the United States

The United States is: a megadiverse country

Location (50 states): Northern Hemisphere and Western Hemisphere (except western Aleutian Islands) Americas North America Northern America Oceania Polynesia Time zones: Eastern Time Zone (UTC−05/UTC−04 during DST) Central Time Zone (UTC−06/UTC−05 during DST) Mountain Time Zone (UTC−07/UTC−06 during DST) Pacific Time Zone (UTC−08/UTC−07 during DST) Alaska Time Zone (UTC−09/UTC−08 during DST) Hawaii–Aleutian Time Zone (UTC−10/UTC−09 during DST) Extreme points of the United States: North: Point Barrow, Alaska South: Ka Lae, Island of Hawai'i, Hawai'i () East: Sail Rock, just offshore West Quoddy Head, Maine Physically East: Eastern Semisopochnoi Island, Alaska West: Peaked Island, offshore Cape Wrangell, Attu Island, Alaska Physically West: Western Amatignak Island, Alaska High: Denali, Alaska at Low: Badwater Basin, Death Valley, California at Land boundaries: 12,034 km (7,477 mi) Canada 8,893 km (5,525 mi) Mexico 3,145 km (1,954 mi) Coastline: 19,924 km (12,380 mi) Population of the United States: 308,745,538 (2010 census) – 3rd most populous country Area of the United States: – 4th most extensive country Atlas of the United States Cities of the United States, by population

Environment of the United States

Beaches in the United States Climate of the United States Climate change in the United States Environmental issues in the United States Ecoregions in the United States Geology of the United States Earthquakes in the United States National parks of the United States Protected areas of the United States Superfund sites in the United States Wildlife of the United States Flora of the United States Fauna of the United States Birds of the United States Mammals of the United States Reptiles of the United States Amphibians of the United States

Geographic features of the United States

Fjords of the United States Glaciers of the United States Islands of the United States Lakes of the United States Mountain peaks of the United States The 104 highest major summits of the United States The 129 most prominent summits of the United States The 112 most isolated major summits of the United States Alaska Range Appalachian Mountains Black Hills Cascade Range Ozark Mountains Sierra Nevada Rocky Mountains Volcanoes of the United States Rivers of the United States Arkansas River Columbia River Colorado River Connecticut River Hudson River Mississippi River Missouri River Potomac River Rio Grande Ohio River Delaware River Snake River Susquehanna River Yukon River Waterfalls of the United States Valleys of the United States World Heritage Sites in the United States

Regions of the United States

East Coast of the United States West Coast of the United States Belt regions of the United States New England Mid-Atlantic The South Midwest Great Plains Pacific Northwest Southwest Hawaiian Archipelago

Physiographic divisions of the United States The geography of the United States varies across their immense area. Within the contiguous U.S., eight distinct physiographic divisions exist, though each is composed of several smaller physiographic subdivisions. These major divisions are:

Laurentian Upland – part of the Canadian Shield that extends into the northern United States Great Lakes area. Atlantic Plain – the coastal regions of the eastern and southern parts includes the continental shelf, the Atlantic Coast and the Gulf Coast. Appalachian Highlands – lying on the eastern side of the United States, it includes the Appalachian Mountains, Adirondacks and New England province. Interior Plains – part of the interior contiguous United States, it includes much of what is called the Great Plains. Interior Highlands – also part of the interior contiguous United States, this division includes the Ozark Plateau. Rocky Mountain System – one branch of the Cordilleran system lying far inland in the western states. Intermontane Plateaus – also divided into the Columbia Plateau, the Colorado Plateau and the Basin and Range Province, it is a system of plateaus, basins, ranges and gorges between the Rocky and Pacific Mountain Systems. It is the setting for the Grand Canyon, the Great Basin and Death Valley. Pacific Mountain System – the coastal mountain ranges and features in the west coast of the United States.

Administrative divisions of the United States

States of the United States

At the Declaration of Independence, the United States consisted of 13 states, former colonies of the United Kingdom. In the following years, the number of states has grown steadily due to expansion to the west, conquest and purchase of lands by the American government, and division of existing states to the current number of 50 United States:

Alabama (AL) Alaska (AK) Arizona (AZ) Arkansas (AR) California (CA) Colorado (CO) Connecticut (CT) Delaware (DE) Florida (FL) Georgia (GA)Hawaii (HI) Idaho (ID) Illinois (IL) Indiana (IN) Iowa (IA) Kansas (KS) Kentucky (KY) Louisiana (LA) Maine (ME) Maryland (MD)Massachusetts (MA) Michigan (MI) Minnesota (MN) Mississippi (MS) Missouri (MO) Montana (MT) Nebraska (NE) Nevada (NV) New Hampshire (NH) New Jersey (NJ)New Mexico (NM) New York (NY) North Carolina (NC) North Dakota (ND) Ohio (OH) Oklahoma (OK) Oregon (OR) Pennsylvania (PA) Rhode Island (RI) South Carolina (SC)South Dakota (SD) Tennessee (TN) Texas (TX) Utah (UT) Vermont (VT) Virginia (VA) Washington (WA) West Virginia (WV) Wisconsin (WI) Wyoming (WY)

Territories of the United States

United States territory Territorial evolution of the United States

Incorporated organized territories none since 1959

Incorporated unorganized territories

Palmyra Atoll

Unincorporated organized territories

Commonwealth of Puerto Rico Commonwealth of the Northern Mariana Islands Territory of Guam Territory of the United States Virgin Islands

Unincorporated unorganized territories Territory of American Samoa, technically unorganized, but self-governing under a constitution last revised in 1967

Baker Island, uninhabited Howland Island, uninhabited Jarvis Island, uninhabited Johnston Atoll, uninhabited Kingman Reef, uninhabited Bajo Nuevo Bank, uninhabited (disputed with Colombia) Serranilla Bank, uninhabited (disputed with Colombia) Midway Islands, no indigenous inhabitants, currently included in the Midway Atoll National Wildlife Refuge Navassa Island, uninhabited (claimed by Haiti) Wake Atoll consisting of Peale, Wake and Wilkes Islands,DOI Office of Internal Affairs no indigenous inhabitants, only contractor personnel (claimed by the Marshall Islands)

Geography of the states and territories AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY

AS – GU – MP – PR – VI

Demography of the United States

AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY

AS – GU – MP – PR – VI

Climate of the United States

History of the United States

Period-coverage

Prehistory of the United States Pre-Columbian era Colonial period 1776 to 1789 1789 to 1815 1815 to 1849 1849 to 1865 1865 to 1917 1917 to 1945 1945 to 1964 1964 to 1980 1980 to 1991 1991 to 2016 2016 to present

History of the states and territories

AK – AL – AR – AZ – CA – CO – CT – DC – DE – FL – GA – HI – IA – ID – IL – IN – KS – KY – LA – MA – MD – ME – MI – MN – MO – MS MT – NC – ND – NE – NH – NM – NV – NJ – NY – OH – OK – OR – PA – RI – SC – SD – TN – TX – UT – VA – VT – WA – WI – WV – WY

AS – GU – MP – PR – VI

History of cities Outline of the history of Los Angeles

Presidents of the United States

George Washington: 1789–1797 John Adams: 1797–1801 Thomas Jefferson: 1801–1809 James Madison: 1809–1817 James Monroe: 1817–1825 John Quincy Adams: 1825–1829 Andrew Jackson: 1829–1837 Martin Van Buren: 1837–1841 William Henry Harrison: 1841 John Tyler: 1841–1845 James K. Polk: 1845–1849 Zachary Taylor: 1849–1850 Millard Fillmore: 1850–1853 Franklin Pierce: 1853–1857 James Buchanan: 1857–1861 Abraham Lincoln: 1861–1865 Andrew Johnson: 1865–1869 Ulysses S. Grant: 1869–1877 Rutherford B. Hayes: 1877–1881 James A. Garfield: 1881 Chester A. Arthur: 1881–1885 Grover Cleveland: 1885–1889 Benjamin Harrison: 1889–1893 Grover Cleveland: 1893–1897 William McKinley: 1897–1901 Theodore Roosevelt: 1901–1909 William H. Taft: 1909–1913 Woodrow Wilson: 1913–1921 Warren G. Harding: 1921–1923 Calvin Coolidge: 1923–1929 Herbert Hoover: 1929–1933 Franklin D. Roosevelt: 1933–1945 Harry S. Truman: 1945–1953 Dwight D. Eisenhower: 1953–1961 John F. Kennedy: 1961–1963 Lyndon B. Johnson: 1963–1969 Richard M. Nixon: 1969–1974 Gerald Ford: 1974–1977 Jimmy Carter: 1977–1981 Ronald Reagan: 1981–1989 George H. W. Bush: 1989–1993 Bill Clinton: 1993–2001 George W. Bush: 2001–2009 Barack Obama: 2009–2017 Donald Trump: 2017–2021 Joe Biden: 2021–2025 Donald Trump: 2025–present

Government and politics in the United States

Form of government: presidential, federal republic Capital (political) of the United States: Washington, D.C. List of Capitals Flag of the United States Political parties in the United States Elections in the United States Voting rights in the United States List of political parties in the United States Democratic Party History of the United States Democratic Party Republican Party History of the United States Republican Party Green Party Independent Party Libertarian Party Reform Party Constitution Party Socialist Party USA Political divisions of the United States Canadian and American politics compared Politics of the Southern United States Criticism of the United States government Corruption in the United States

Federal government

United States Constitution

Legislative branch

United States Congress United States Senate President pro tempore of the United States Senate, Patty Murray (D-WA) United States House of Representatives Speaker of the United States House of Representatives, Mike Johnson (R-LA)

Executive branch

Head of state and head of government, 47th President of the United States, Donald Trump 50th Vice President of the United States, JD Vance

Federal executive departments

All departments are listed by their present-day name and only departments with past or present cabinet-level status are listed. Order of succession applies only to within the cabinet; the vice president has always been first in the line of succession, and the Speaker of the House and the President pro tem of the Senate have at times been included.