The United States of America is a federal republic[1] consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands.[2][3] Both the states and the United States as a whole are each sovereign jurisdictions.[4] The Tenth Amendment to the United States Constitution allows states to exercise all powers of government not delegated to the federal government. Each state has its own constitution and government, and all states and their residents are represented in the federal Congress, a bicameral legislature consisting of the Senate and the House of Representatives. Each state is represented by two senators, while representatives are distributed among the states in proportion to the most recent constitutionally mandated decennial census.[5] Additionally, each state is entitled to select a number of electors to vote in the Electoral College, the body that elects the president of the United States, equal to the total of representatives and senators in Congress from that state.[6] The federal district does not have representatives in the Senate, but has a non-voting delegate in the House, and it is also entitled to electors in the Electoral College. Congress can admit more states, but it cannot create a new state from territory of an existing state or merge two or more states into one without the consent of all states involved, and each new state is admitted on an equal footing with the existing states.[7]

A map of the United States showing its 50 states, federal district and five inhabited territories. Alaska, Hawaii, and the territories are shown at different scales, and the Aleutian Islands and the uninhabited northwestern Hawaiian Islands are omitted from the map.

The United States has control over fourteen territories. Five of them (American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the United States Virgin Islands) have a permanent, nonmilitary population, while nine of them (the United States Minor Outlying Islands) do not. With the exception of Navassa Island, Puerto Rico, and the U.S. Virgin Islands, which are located in the Caribbean, all territories are located in the Pacific Ocean. One territory, Palmyra Atoll, is considered to be incorporated, meaning the full body of the Constitution has been applied to it; the other territories are unincorporated, meaning the Constitution does not fully apply to them. Ten territories (the Minor Outlying Islands and American Samoa) are considered to be unorganized, meaning they have not had an organic act enacted by Congress; the four other territories are organized, meaning an organic act has been enacted by Congress. The five inhabited territories each have limited autonomy in addition to having territorial legislatures and governors, but residents cannot vote in federal elections, although all are represented by non-voting delegates in the House.

The largest state by population is California, with a population of 39,538,223 people, while the smallest is Wyoming, with a population of 576,851 people; the federal district has a larger population (689,545) than both Wyoming and Vermont. The largest state by area is Alaska, encompassing 665,384 square miles (1,723,340 km2), while the smallest is Rhode Island, encompassing 1,545 square miles (4,000 km2). The most recent states to be admitted, Alaska and Hawaii, were admitted in 1959. The largest territory by population is Puerto Rico, with a population of 3,285,874 people (larger than 21 states), while the smallest is the Northern Mariana Islands, with a population of 47,329 people. Puerto Rico is the largest territory by area, encompassing 5,325 square miles (13,790 km2); the smallest territory, Kingman Reef, encompasses only 0.005 square miles (0.013 km2).

States

More information Flag, name and postal abbreviation, Cities ...
States of the United States of America
Flag, name and
postal abbreviation[8]
Cities Ratification or
admission[upper-alpha 1]
Population
(2020)[10]
Total area[11] Reps.
CapitalLargest[12] mi2km2
 Alabama ALMontgomeryHuntsvilleDec 14, 1819
5,024,279
52,420135,767
7
 Alaska AKJuneauAnchorageJan 3, 1959
733,391
665,3841,723,337
1
 Arizona AZPhoenixFeb 14, 1912
7,151,502
113,990295,234
9
 Arkansas ARLittle RockJun 15, 1836
3,011,524
53,179137,732
4
 California CASacramentoLos AngelesSep 9, 1850
39,538,223
163,695423,967
52
 Colorado CODenverAug 1, 1876
5,773,714
104,094269,601
8
 Connecticut CTHartfordBridgeportJan 9, 1788
3,605,944
5,54314,357
5
 Delaware DEDoverWilmingtonDec 7, 1787
989,948
2,4896,446
1
 Florida FLTallahasseeJacksonvilleMar 3, 1845
21,538,187
65,758170,312
28
 Georgia GAAtlantaJan 2, 1788
10,711,908
59,425153,910
14
 Hawaii HIHonoluluAug 21, 1959
1,455,271
10,93228,313
2
 Idaho IDBoiseJul 3, 1890
1,839,106
83,569216,443
2
 Illinois ILSpringfieldChicagoDec 3, 1818
12,812,508
57,914149,995
17
 Indiana INIndianapolisDec 11, 1816
6,785,528
36,42094,326
9
 Iowa IADes MoinesDec 28, 1846
3,190,369
56,273145,746
4
 Kansas KSTopekaWichitaJan 29, 1861
2,937,880
82,278213,100
4
 Kentucky[upper-alpha 2] KYFrankfortLouisvilleJun 1, 1792
4,505,836
40,408104,656
6
 Louisiana LABaton RougeNew OrleansApr 30, 1812
4,657,757
52,378135,659
6
 Maine MEAugustaPortlandMar 15, 1820
1,362,359
35,38091,633
2
 Maryland MDAnnapolisBaltimoreApr 28, 1788
6,177,224
12,40632,131
8
 Massachusetts[upper-alpha 2] MABostonFeb 6, 1788
7,029,917
10,55427,336
9
 Michigan MILansingDetroitJan 26, 1837
10,077,331
96,714250,487
13
 Minnesota MNSaint PaulMinneapolisMay 11, 1858
5,706,494
86,936225,163
8
 Mississippi MSJacksonDec 10, 1817
2,961,279
48,432125,438
4
 Missouri MOJefferson CityKansas CityAug 10, 1821
6,154,913
69,707180,540
8
 Montana MTHelenaBillingsNov 8, 1889
1,084,225
147,040380,831
2
 Nebraska NELincolnOmahaMar 1, 1867
1,961,504
77,348200,330
3
 Nevada NVCarson CityLas VegasOct 31, 1864
3,104,614
110,572286,380
4
 New Hampshire NHConcordManchesterJun 21, 1788
1,377,529
9,34924,214
2
 New Jersey NJTrentonNewarkDec 18, 1787
9,288,994
8,72322,591
12
 New Mexico NMSanta FeAlbuquerqueJan 6, 1912
2,117,522
121,590314,917
3
 New York NYAlbanyNew York CityJul 26, 1788
20,201,249
54,555141,297
26
 North Carolina NCRaleighCharlotteNov 21, 1789
10,439,388
53,819139,391
14
 North Dakota NDBismarckFargoNov 2, 1889
779,094
70,698183,108
1
 Ohio OHColumbusMar 1, 1803
11,799,448
44,826116,098
15
 Oklahoma OKOklahoma CityNov 16, 1907
3,959,353
69,899181,037
5
 Oregon ORSalemPortlandFeb 14, 1859
4,237,256
98,379254,799
6
 Pennsylvania[upper-alpha 2] PAHarrisburgPhiladelphiaDec 12, 1787
13,002,700
46,054119,280
17
 Rhode Island RIProvidenceMay 29, 1790
1,097,379
1,5454,001
2
 South Carolina SCColumbiaCharlestonMay 23, 1788
5,118,425
32,02082,933
7
 South Dakota SDPierreSioux FallsNov 2, 1889
886,667
77,116199,729
1
 Tennessee TNNashvilleJun 1, 1796
6,910,840
42,144109,153
9
 Texas TXAustinHoustonDec 29, 1845
29,145,505
268,596695,662
38
 Utah UTSalt Lake CityJan 4, 1896
3,271,616
84,897219,882
4
 Vermont VTMontpelierBurlingtonMar 4, 1791
643,077
9,61624,906
1
 Virginia[upper-alpha 2] VARichmondVirginia BeachJun 25, 1788
8,631,393
42,775110,787
11
 Washington WAOlympiaSeattleNov 11, 1889
7,705,281
71,298184,661
10
 West Virginia WVCharlestonJun 20, 1863
1,793,716
24,23062,756
2
 Wisconsin WIMadisonMilwaukeeMay 29, 1848
5,893,718
65,496169,635
8
 Wyoming WYCheyenneJul 10, 1890
576,851
97,813253,335
1
Close

Federal district

More information Flag, name and postal abbreviation, Established ...
Federal district of the United States
Flag, name and
postal abbreviation[8]
EstablishedPopulation
[10]
Total area[11]Reps.
mi2km2
 District of Columbia DCJul 16, 1790[13]689,54568176 1[upper-alpha 3]
Close

Territories

Thumb
  States and federal district         Inhabited territories         Uninhabited territories

Inhabited territories

More information Name and postal abbreviation, Capital ...
Inhabited territories of the United States
Name and
postal abbreviation[8]
Capital Acquired
[15]
Territorial status[16] Population
[10][17]
Total area[11]Reps.
mi2km2
 American Samoa ASPago Pago[18] 1900
49,710
5811,505
 Guam GUHagåtña[20] 1899
Unincorporated, organized
153,836
5711,478
 Northern Mariana Islands MPSaipan[21] 1986
Unincorporated, organized[upper-alpha 5]
47,329
1,9765,117
 Puerto Rico PRSan Juan[22] 1899
Unincorporated, organized[upper-alpha 5]
3,285,874
5,32513,791
 U.S. Virgin Islands VICharlotte Amalie[23] 1917
Unincorporated, organized
87,146
7331,898
Close

Uninhabited territories

More information Name, Acquired ...
Territories of the United States with no permanent population
NameAcquired[15] Territorial status[16]Land area[upper-alpha 7]
mi2km2
Baker Island[24] 18560.92.2
Howland Island[24] 1858
Unincorporated, unorganized
0.61.6
Jarvis Island[25] 1856
Unincorporated, unorganized
2.25.7
Johnston Atoll[26] 1859
Unincorporated, unorganized
12.6
Kingman Reef[27] 1860
Unincorporated, unorganized
0.0050.01
Midway Atoll[upper-alpha 8][29] 1867
Unincorporated, unorganized
37.8
Navassa Island[30] 1858[upper-alpha 9]
Unincorporated, unorganized
37.8
Palmyra Atoll[upper-alpha 10][32] 1898
Incorporated, unorganized
1.53.9
Wake Island[upper-alpha 11][33] 1899[upper-alpha 12]
Unincorporated, unorganized
2.56.5
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Disputed territories

More information Name, Claimed ...
Territories claimed but not administered by the United States
NameClaimed
[15]
Territorial status[35] AreaAdministered by[35]Also claimed by[35]
mi2km2
Bajo Nuevo Bank (Petrel Island)[15] 1869
Unincorporated, unorganized
(disputed sovereignty)
56145[upper-alpha 13][36]  Colombia Jamaica
 Nicaragua
Serranilla Bank[15] 1880
Unincorporated, unorganized
(disputed sovereignty)
4631,200[upper-alpha 14][37]  Colombia Honduras
 Nicaragua
Close

See also

Explanatory notes

  1. The original 13 states became sovereign in July 1776 upon agreeing to the United States Declaration of Independence, and each joined the first Union of states between 1777 and 1781, upon ratifying the Articles of Confederation.[9] These states are presented in the order in which each ratified the 1787 Constitution, thus joining the present federal Union of states. Subsequent states are listed in the order of their admission to the Union, and the date given is the official establishment date set by Act of Congress. For further details, see List of U.S. states by date of admission to the Union
  2. Uses the term commonwealth rather than state in its full official name
  3. Represented by a non-voting delegate in the House of Representatives.[14]
  4. Although not organized through a federal organic act or other explicit Congressional directive on governance, the people of American Samoa adopted a constitution in 1967, and then in 1977, elected territorial officials for the first time.[19]
  5. Organized as a commonwealth.
  6. Represented by a non-voting resident commissioner in the House of Representatives.[14]
  7. Excluding lagoon
  8. Although there are no indigenous inhabitants, around 40 United States Fish and Wildlife Service staff and service contractors live on the island at any given time.[28]
  9. U.S. sovereignty is disputed by Haiti.[31]
  10. Although there are no indigenous inhabitants, between 4 and 20 Nature Conservancy, employees, United States Fish and Wildlife Service staff, and researchers live on the island at any given time.[28]
  11. Although there are no indigenous inhabitants, as of 2009, around 150 U.S. 150 U.S. military personnel and civilian contractors were living on the island, staffing the Wake Island Airfield and communications facilities.[33]
  12. U.S. sovereignty is disputed by the Republic of Marshall Islands.[34]
  13. This is the approximate figure for the land area of the bank, and does not include the surrounding territorial waters.
  14. This figure includes the total land area of the Serranilla Bank and the water area of its lagoon, but not the surrounding territorial waters.

References

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