List of islands of the United States by area

Last updated

Satellite image of the Big Island of Hawaii, the largest island in the United States. Hawai'i.jpg
Satellite image of the Big Island of Hawaii, the largest island in the United States.
Scale depiction of the 5 largest islands in the US, with some other significant islands Largest US Islands.jpg
Scale depiction of the 5 largest islands in the US, with some other significant islands

This is a list of islands of the United States, as ordered by area. It includes most islands with an area greater than 20 square miles (approximately 52 km2). Mainland areas cut by human-made canals are not considered islands.

Contents

Islands over 75 square miles (190 km2)

RankIsland's NameArea (sq mi)Area (km2)Location Population (2010)
1 Hawaii Island 4,028 [1] 10,433 [1] Flag of Hawaii.svg  Hawaii 185,079
2 Kodiak Island 3,588 [2] 9,293 [2] Flag of Alaska.svg  Alaska 13,592 [2]
3 Puerto Rico 3,513 [3] 9,100 [3] Flag of Puerto Rico.svg  Puerto Rico 3,285,874 [4]
4 Prince of Wales Island 2,5776,675 [5] [6] Flag of Alaska.svg  Alaska 5,559
5 Chichagof Island 2,0805,388Flag of Alaska.svg  Alaska 1,342
6 St. Lawrence Island 1,9835,135Flag of Alaska.svg  Alaska 1,352
7 Admiralty Island 1,6844,362Flag of Alaska.svg  Alaska 650
8 Nunivak Island 1,6254,209Flag of Alaska.svg  Alaska 191
9 Unimak Island 1,5904,119Flag of Alaska.svg  Alaska 35
10 Baranof Island 1,5704,065 [5] Flag of Alaska.svg  Alaska 8,532
11 Long Island 1,401 [7] 3,629 [7] Flag of New York.svg  New York 7,568,304 [7]
12 Revillagigedo Island 1,1452,965 [6] Flag of Alaska.svg  Alaska 13,477
13 Kupreanof Island 1,0862,813 [6] Flag of Alaska.svg  Alaska 584
14 Unalaska Island 1,0512,722Flag of Alaska.svg  Alaska 1,759
15 Nelson Island 8432,183Flag of Alaska.svg  Alaska 1,197
16 Kuiu Island 7581,962 [6] Flag of Alaska.svg  Alaska 10
17 Maui 727 [1] 1,883 [1] Flag of Hawaii.svg  Hawaii 144,444
18 Afognak 6981,809Flag of Alaska.svg  Alaska 169
19 Umnak 6921,793Flag of Alaska.svg  Alaska 39
20 Oahu 597 [1] 1,545 [1] Flag of Hawaii.svg  Hawaii 953,207
21 Kauai 552 [1] 1,430 [1] Flag of Hawaii.svg  Hawaii 67,091
22 Atka Island 4101,061Flag of Alaska.svg  Alaska 61
23 Attu Island 346896Flag of Alaska.svg  Alaska 0
24 Etolin Island 336870Flag of Alaska.svg  Alaska 15
25 Montague Island 305790Flag of Alaska.svg  Alaska 0
26 Adak Island 280725Flag of Alaska.svg  Alaska 326
27 Molokai 260 [1] 673 [1] Flag of Hawaii.svg  Hawaii 7,345
28 Dall Island 253655 [5] Flag of Alaska.svg  Alaska 20
29 Wrangell Island 216560Flag of Alaska.svg  Alaska 2,401
30 Mitkof Island 211546 [6] Flag of Alaska.svg  Alaska 3,364
31 Padre Island 209 [8] 542Flag of Texas.svg  Texas 2,816
32 Guam 209541Flag of Guam.svg  Guam 154,805
33 Isle Royale 206 [9] 534 [9] Flag of Michigan.svg  Michigan 0
34 Tanaga Island 204529Flag of Alaska.svg  Alaska 0
35 Zarembo Island 185478Flag of Alaska.svg  Alaska 0
36 Unga Island 177461Flag of Alaska.svg  Alaska 0
37 Amlia 176459Flag of Alaska.svg  Alaska 0
38 Hinchinbrook Island 170445Flag of Alaska.svg  Alaska 5
39 Kosciusko Island 169438Flag of Alaska.svg  Alaska 52
40 Whidbey Island 169437Flag of Washington.svg  Washington 58,211
41 Kruzof Island 168435Flag of Alaska.svg  Alaska 0
42 Kanaga Island 142369Flag of Alaska.svg  Alaska 0
43 Lanai 141 [1] 364 [1] Flag of Hawaii.svg  Hawaii 3,193
44 St. Matthew Island 137354Flag of Alaska.svg  Alaska 0
45 Annette Island 132342Flag of Alaska.svg  Alaska 1,447
46 Akutan Island 129334Flag of Alaska.svg  Alaska 713
47 Drummond Island 125 [10] 324Flag of Michigan.svg  Michigan 1,058
48 Hagemeister Island 120312Flag of Alaska.svg  Alaska 0
49 Nagai Island 120310Flag of Alaska.svg  Alaska 0
50 Amchitka 119309Flag of Alaska.svg  Alaska 0
51 Sitkalidak Island 119309Flag of Alaska.svg  Alaska 0
52 Mount Desert Island 108 [11] 280 [11] Flag of Maine.svg  Maine 10,424 [11]
53 Kiska 107278Flag of Alaska.svg  Alaska 0
54 Knight Island 101260Flag of Alaska.svg  Alaska 0
55 Marsh Island 100259Flag of Louisiana.svg  Louisiana 0
56 Santa Cruz Island 98 [12] 254 [12] Flag of California.svg  California 2
57 Gravina Island 95245Flag of Alaska.svg  Alaska 50
58 Martha's Vineyard 91236Flag of Massachusetts.svg  Massachusetts 14,901
59 Agattu 90234Flag of Alaska.svg  Alaska 0
60 Semisopochnoi Island 86224Flag of Alaska.svg  Alaska 0
61 Johns Island 84217Flag of South Carolina.svg  South Carolina 11,477
62 Seguam Island 83215Flag of Alaska.svg  Alaska 1
63 Saint Croix 84212Flag of the United States Virgin Islands.svg  U.S. Virgin Islands 53,234
64 Yakobi Island 82212Flag of Alaska.svg  Alaska 0
65 Santa Rosa Island 81209Flag of California.svg  California 2
66 Raspberry Island 77200Flag of Alaska.svg  Alaska 2
67 Douglas Island 77199Flag of Alaska.svg  Alaska 5,297
68 Santa Catalina Island 75194Flag of California.svg  California 3,696

Islands 5–75 square miles (13–194 km2)

This section of the list is not complete, although it should cover most of the islands in the United States over 20 square miles (52 km2).

Island's NameArea (sq mi)Area (km2)LocationPopulationDensity (per km2)
Heceta Island 70181Flag of Alaska.svg  Alaska 140.08
Niihau 70 [1] 180 [1] Flag of Hawaii.svg  Hawaii 1600.9
Saipan 69180Flag of the Northern Mariana Islands.svg  Northern Mariana Islands 62,392346
Tugidak Island 69180Flag of Alaska.svg  Alaska 00
Edisto Island 68176Flag of South Carolina.svg  South Carolina 2,30113
Hawkins Island 67175Flag of Alaska.svg  Alaska 40.023
Yunaska Island 67172Flag of Alaska.svg  Alaska 00
Sitkinak Island 65169Flag of Alaska.svg  Alaska 00
Akun Island 65168Flag of Alaska.svg  Alaska 00
Shuyak Island 65168Flag of Alaska.svg  Alaska 00
Chuginadak Island 65167Flag of Alaska.svg  Alaska 00
Sukkwan Island 65167Flag of Alaska.svg  Alaska 90.05
Galveston Island 64166Flag of Texas.svg  Texas 58,175350
Matagorda Island 61157Flag of Texas.svg  Texas 00
Great Sitkin Island 60156Flag of Alaska.svg  Alaska 00
Staten Island 59153Flag of New York.svg  New York 443,7282,900
Deer Island 58152Flag of Alaska.svg  Alaska 00
Duke Island 57149Flag of Alaska.svg  Alaska 00
Orcas Island 57148Flag of Washington.svg  Washington 4,4530.03
Cumberland Island 57147Flag of Georgia (U.S. state).svg  Georgia 00
San Clemente Island 57147Flag of California.svg  California 00
Uganik Island 57147Flag of Alaska.svg  Alaska 00
St. Michael Island 56145Flag of Alaska.svg  Alaska 9156.3
Stuart Island 56145Flag of Alaska.svg  Alaska 00
Hilton Head Island 55144Flag of South Carolina.svg  South Carolina 33,862235
Beaver Island 55144Flag of Michigan.svg  Michigan 5513.8
San Juan Island 55143Flag of Washington.svg  Washington 6,82247.7
Suemez Island 52135 [5] Flag of Alaska.svg  Alaska 00
Tutuila 52135Flag of American Samoa.svg  American Samoa 55,876413.9
Esther Island 52133Flag of Alaska.svg  Alaska 310.23
Vieques 51132 [13] Flag of Puerto Rico.svg  Puerto Rico 9,106 [13] 69
Sanak Island 50128Flag of Alaska.svg  Alaska 00
Sugar Island 49128Flag of Michigan.svg  Michigan 6525
Bois Blanc Island 49127Flag of Michigan.svg  Michigan 710.56
Nantucket 48 [14] 124 [14] Flag of Massachusetts.svg  Massachusetts 9,520 [14] 76.7
Davis Island 46120Flag of Louisiana.svg  Louisiana Flag of Mississippi.svg  Mississippi 00
Kagalaska Island 45116Flag of Alaska.svg  Alaska 00
Kahoolawe 45 [1] 116 [1] Flag of Hawaii.svg  Hawaii 00
Long Island 45115Flag of Alaska.svg  Alaska 00
Chirikof Island 44115Flag of Alaska.svg  Alaska 00
Wadmalaw Island 42109Flag of South Carolina.svg  South Carolina 2,61123.9
Antelope Island 42109Flag of Utah.svg  Utah 00
Dolgoi Island 41107Flag of Alaska.svg  Alaska 00
Fidalgo Island 41107Flag of Washington.svg  Washington 20,700193
Baker Island 41105 [5] Flag of Alaska.svg  Alaska 00
Camano Island 40105Flag of Washington.svg  Washington 13,358127
Saint Paul Island 40104Flag of Alaska.svg  Alaska 5325
Sedanka Island 40103Flag of Alaska.svg  Alaska 00
Deer Isle <40<102Flag of Maine.svg  Maine <3,02829
Tinian 39102Flag of the Northern Mariana Islands.svg  Northern Mariana Islands 3,54034.7
Aquidneck Island/Rhode Island 3898Flag of Rhode Island.svg  Rhode Island 60,870621
Vashon Island 3796Flag of Washington.svg  Washington 10,123105
Tigalda Island 3591Flag of Alaska.svg  Alaska 00
Saint George Island 3590Flag of Alaska.svg  Alaska 1001.1
Catherine Island 3487Flag of Alaska.svg  Alaska 00
Hatteras Island 3486Flag of North Carolina.svg  North Carolina 4,00146.5
Rota 3385Flag of the Northern Mariana Islands.svg  Northern Mariana Islands 2,47729
Sauvie Island 3385Flag of Oregon.svg  Oregon 1,078
Grand Isle 3282Flag of Vermont.svg  Vermont 3,651
Kent Island 3282Flag of Maryland.svg  Maryland 16,812
Pine Island 3282Flag of Florida.svg  Florida 8,235
Saint Thomas 3281Flag of the United States Virgin Islands.svg  U.S. Virgin Islands 51,181
Coronation Island 3078Flag of Alaska.svg  Alaska 00
Lopez Island 3077Flag of Washington.svg  Washington 2,17728
Grand Island 2973Flag of New York.svg  New York 18,621255
Bainbridge Island 2872Flag of Washington.svg  Washington 20,308282
Gareloi Island 2667Flag of Alaska.svg  Alaska 00
Assateague Island 24.463Flag of Maryland.svg  Maryland Flag of Virginia.svg  Virginia 00
Madeline Island 2462Flag of Wisconsin.svg  Wisconsin 2463.9
Washington Island 2461Flag of Wisconsin.svg  Wisconsin 6009.8
Vinalhaven Island 2361Flag of Maine.svg  Maine 1,23520
Manhattan 2360Flag of New York.svg  New York 1,537,19525,619
San Nicolas Island 2359Flag of California.svg  California 00
Alameda Island 2359Flag of California.svg  California 73,8121,251
Marquette Island 2359Flag of Michigan.svg  Michigan 00
Woronkofski Island 2359Flag of Alaska.svg  Alaska 00
Grand Island 2258Flag of Michigan.svg  Michigan 450.8
North Manitou Island 2258Flag of Michigan.svg  Michigan 00
Neebish Island 2256Flag of Michigan.svg  Michigan 661.2
Oak Island 2153Flag of North Carolina.svg  North Carolina 8,386158
Tuxekan Island 2053Flag of Alaska.svg  Alaska 00
Saint John 2051Flag of the United States Virgin Islands.svg  U.S. Virgin Islands 4,00778
Harstine Island 18.6548.3Flag of Washington.svg  Washington 1,41229.4
Amelia Island 18.247.1Flag of Florida.svg  Florida 10,716228
Pagan 1847Flag of the Northern Mariana Islands.svg  Northern Mariana Islands 7
Roanoke Island 17.9546.5Flag of North Carolina.svg  North Carolina 6,724144
Georgetown Island 17.445.0Flag of Maine.svg  Maine 1,058
Taʻū 17.1144.31Flag of American Samoa.svg  American Samoa 79017.8
Agrihan 17.0144.05Flag of the Northern Mariana Islands.svg  Northern Mariana Islands 0
Sanibel Island 16.1841.90Flag of Florida.svg  Florida 6,382152
Stockton Island 15.540Flag of Wisconsin.svg  Wisconsin 00
Key Largo 15.2539.49Flag of Florida.svg  Florida 12,447315
Fenwick Island 1538Flag of Delaware.svg  Delaware Flag of Maryland.svg  Maryland 8,002210.5
San Miguel Island 1538Flag of California.svg  California 00
Anatahan 13.0933.91Flag of the Northern Mariana Islands.svg  Northern Mariana Islands 0
Wellesley Island 1333Flag of New York.svg  New York 36811
Islesboro Island 12.432.1Flag of Maine.svg  Maine 583
Outer Island 12.331.8Flag of Wisconsin.svg  Wisconsin 00
Shelter Island 12.1931.58Flag of New York.svg  New York 2,41376.4
Marco Island 12.131.5Flag of Florida.svg  Florida 15,760
Culebra 11.6430.9Flag of Puerto Rico.svg  Puerto Rico 1,314
North Haven 11.630.1Flag of Maine.svg  Maine 417
Bogue Banks 11.329.1Flag of North Carolina.svg  North Carolina ~6,600
Kiawah Island 11.1728.93Flag of South Carolina.svg  South Carolina 1,769
Swan's Island 10.928.4Flag of Maine.svg  Maine 355
Mockhorn Island 10.928.3Flag of Virginia.svg  Virginia 0
Isle au Haut 10.727.6Flag of Maine.svg  Maine 92
Marsh Island 10.226.4Flag of Maine.svg  Maine ~7,000
Grosse Ile 9.624.9Flag of Michigan.svg  Michigan 10,894
Sebascodegan Island 9.624.8Flag of Maine.svg  Maine <5,000
Conanicut Island 9.425.1Flag of Rhode Island.svg  Rhode Island 5,622
Lummi Island 9.2524 Flag of Washington.svg Washington 822
Block Island 925Flag of Rhode Island.svg  Rhode Island 1,051
Westport Island 8.8122.82Flag of Maine.svg  Maine 719
Cypress Island 8.622.3Flag of Washington.svg  Washington 401.8
Guemes Island 8.622.3Flag of Washington.svg  Washington 60527
Ocracoke Island 8.622.3Flag of North Carolina.svg  North Carolina 79735.7
Grindstone Island 8.522.1Flag of New York.svg  New York ~20-700
Absecon Island 8.221.2Flag of New Jersey.svg  New Jersey 57,457
Grand Isle 8.1721.17Flag of Louisiana.svg  Louisiana 1,00547.5
South Manitou Island 821Flag of Michigan.svg  Michigan 00
Oak Island 7.920.3Flag of Wisconsin.svg  Wisconsin 00
Garden Island 7.820.2Flag of Michigan.svg  Michigan 00
Anderson Island 7.7520.1Flag of Washington.svg  Washington 1,03751.6
Arrowsic Island 7.7520.07Flag of Maine.svg  Maine 47723.8
Shaw Island 7.720Flag of Washington.svg  Washington 24012
Bulls Island 7.6619.8Flag of South Carolina.svg  South Carolina 00
Puget Island 7.519.4Flag of Washington.svg  Washington 83142.8
Naushon Island 7.419Flag of Massachusetts.svg  Massachusetts 301.57
Mercer Island 717Flag of Washington.svg  Washington 22,0361,296
McNeil Island 6.6317.2Flag of Washington.svg  Washington 21412.4
Sugar Island 6.57517.03Flag of Maine.svg  Maine 00
Blakely Island 6.516.9Flag of Washington.svg  Washington 563.3
Marrowstone Island 6.316.4Flag of Washington.svg  Washington 84451.5
Dauphin Island 6.2616.2Flag of Alabama.svg  Alabama 1,37184.6
Verona Island 6.2416.16Flag of Maine.svg  Maine 50731.4
Shemya 5.915.3Flag of Alaska.svg  Alaska 00
Prudence Island 5.5714.43Flag of Rhode Island.svg  Rhode Island 27819.3
South Core Banks 5.514.2Flag of North Carolina.svg  North Carolina 00
High Island (Michigan) 5.514.1Flag of Michigan.svg  Michigan 00
South Fox Island 5.413.9Flag of Michigan.svg  Michigan 00
Fox Island 5.213.5Flag of Washington.svg  Washington 3,921290
Gardiners Island 5.18413.43Flag of New York.svg  New York 00

See also

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The term "United States," when used in the geographic sense, refers to the contiguous United States, Alaska, Hawaii, the five insular territories of Puerto Rico, Northern Mariana Islands, U.S. Virgin Islands, Guam, American Samoa, and minor outlying possessions. The United States shares land borders with Canada and Mexico and maritime borders with Russia, Cuba, The Bahamas, and many other countries, mainly in the Caribbeanin addition to Canada and Mexico. The northern border of the United States with Canada is the world's longest bi-national land border.

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The contiguous United States consists of the 48 adjoining U.S. states and the District of Columbia of the United States in central North America. The term excludes the only two non-contiguous states, which are Alaska and Hawaii, and all other offshore insular areas, such as the U.S. territories of American Samoa, Guam, the Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands. The colloquial term "Lower 48" is also used, especially in relation to Alaska.

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References

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  8. "Padre Island". Handbook of Texas Online. University of Texas . Retrieved November 12, 2007. Padre Island comprises a total of 133,918 acres (541.95 km2) in Nueces, Kleberg, Willacy, Cameron, and Kenedy County, Texas.
  9. 1 2 "Isle Royale National Park - Nature & Science". Isle Royale National Park. National Park Service. July 25, 2006. Retrieved October 29, 2007. Isle Royale National Park preserves 132,018 acres (534.26 km2) of land-based wilderness
  10. Drummond Island comprises the bulk of Drummond Township, Chippewa County, Michigan. According to the U.S. Census Bureau, the land area of Drummond Township is 334.3 km2, or 249.1 mi2, and its population was 1,049 in 2017. The township includes a number of apparently uninhabited smaller islands in Potagannissing Bay, and their estimated combined area is not more than four mi2.
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