List of islands of the United States by area

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 man-made canals are not considered islands.

Satellite image of the Big Island of Hawaii, the largest island in the United States.

Islands over 250 square miles (650 km2)

Rank Island's Name Area (sq mi) Area (km2) Location Population (2010)
1Hawaii Island (the Big Island)4,028[1]10,433[1] Hawaii185,079
2Kodiak Island3,588[2]9,293[2] Alaska13,592[2]
3Puerto Rico3,3638,710 Puerto Rico3,725,789
4Prince of Wales Island2,5776,675[3][4] Alaska5,559
5Chichagof Island2,0805,388 Alaska1,342
6St. Lawrence Island1,9835,135 Alaska1,352
7Admiralty Island1,6844,362 Alaska650
8Nunivak Island1,6254,209 Alaska191
9Unimak Island1,5904,119 Alaska35
10Baranof Island1,5704,065[3] Alaska8,532
11Long Island1,401[5]3,629[5] New York7,568,304[5]
12Revillagigedo Island1,1452,965[4] Alaska13,477
13Kupreanof Island1,0862,813[4] Alaska584
14Unalaska Island1,0512,722 Alaska1,759
15Nelson Island8432,183 Alaska1,197
16Kuiu Island7581,962[4] Alaska10
17Maui727[1]1,883[1] Hawaii144,444
18Afognak6981,809 Alaska169
19Umnak6921,793 Alaska39
20Oahu597[1]1,545[1] Hawaii953,207
21Kauai552[1]1,430[1] Hawaii67,091
22Atka Island4101,061 Alaska61
23Attu Island346896 Alaska0
24Etolin Island336870 Alaska15
25Montague Island305790 Alaska0
26Adak Island280725 Alaska326
27Molokai260[1]673[1] Hawaii7,345
28Dall Island253655[3] Alaska20

Islands 75–250 square miles (194–647 km2)

This section of the list might not be complete, but covers almost all of the islands in the United States over 75 square miles (190 km2).

Rank Island's Name Area (sq mi) Area (km2) Location Population (2000)
29Wrangell Island216560 Alaska2,401
30Mitkof Island211546[4] Alaska3,364
31Padre Island209[6]542 Texas2,816
32Guam209541 Guam154,805
33Isle Royale206[7]534[7] Michigan0
34Tanaga Island204529 Alaska0
35Zarembo Island185478 Alaska0
36Unga Island177461 Alaska0
37Amlia176459 Alaska0
38Hinchinbrook Island170445 Alaska5
39Kosciusko Island169438 Alaska52
40Whidbey Island169437 Washington58,211
41Kruzof Island168435 Alaska0
42Kanaga Island142369 Alaska0
43Lanai141[1]364[1] Hawaii3,193
44St. Matthew Island137354 Alaska0
45Annette Island132342 Alaska1,447
46Akutan Island129334 Alaska713
47Drummond Island125[8]324 Michigan1,058
48Hagemeister Island120312 Alaska0
49Nagai Island120310 Alaska0
50Amchitka119309 Alaska0
51Sitkalidak Island119309 Alaska0
52Mount Desert Island108[9]280[9] Maine10,424[9]
53Kiska107278 Alaska0
54Knight Island101260 Alaska0
55Marsh Island100259 Louisiana0
56Santa Cruz Island98[10]254[10] California2
57Gravina Island95245 Alaska50
58Martha's Vineyard91236 Massachusetts14,901
59Agattu90234 Alaska0
60Semisopochnoi Island86224 Alaska0
61Johns Island84217 South Carolina11,477
62Seguam Island83215 Alaska1
63Saint Croix84212 U.S. Virgin Islands53,234
64Yakobi Island82212 Alaska0
65Santa Rosa Island81209 California2
66Raspberry Island77200 Alaska2
67Douglas Island77199 Alaska5,297
68Santa Catalina Island75194 California3,696

Islands under 75 square miles (190 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 Name Area (sq mi) Area (km2) Location Population (2000)
Heceta Island70181 Alaska14
Niihau70[1]180[1] Hawaii160
Saipan69180 Northern Mariana Islands62,392
Tugidak Island69180 Alaska0
Hawkins Island67175 Alaska4
Yunaska Island67172 Alaska0
Sitkinak Island65169 Alaska0
Akun Island65168 Alaska0
Shuyak Island65168 Alaska0
Chuginadak Island65167 Alaska0
Sukkwan Island65167 Alaska9
Galveston Island64166 Texas58,175
Matagorda Island61157 Texas0
Great Sitkin Island60156 Alaska0
Staten Island59153 New York443,728
Deer Island58152 Alaska0
Duke Island57149 Alaska-1?
Orcas Island57148 Washington4,453
Cumberland Island57147 Georgia0
San Clemente Island57147 California0
Uganik Island57147 Alaska0
St. Michael Island56145 Alaska915
Stuart Island56145 Alaska0
Hilton Head Island55144 South Carolina33,862
Beaver Island55144 Michigan551
San Juan Island55143 Washington6,822
Suemez Island52135[3] Alaska0
Tutuila52135 American Samoa55,876
Esther Island52133 Alaska31
Vieques51132[11] Puerto Rico9,106[11]
Sanak Island50128 Alaska0
Sugar Island49128 Michigan652
Bois Blanc Island49127 Michigan71
Nantucket48[12]124[12] Massachusetts9,520[12]
Kagalaska Island45116 Alaska0
Kahoolawe45[1]116[1] Hawaii0
Long Island45115 Alaska0
Chirikof Island44115 Alaska0
Wadmalaw Island42109 South Carolina2,611
Antelope Island42109 Utah0
Dolgoi Island41107 Alaska0
Fidalgo Island41107 Washington20,700
Baker Island41105[3] Alaska-1?
Camano Island40105 Washington13,358
Saint Paul Island40104 Alaska532
Sedanka Island40103 Alaska0
Deer Isle<40<102 Maine<3,028
Tinian39102 Northern Mariana Islands3,540
Aquidneck Island/Rhode Island3898 Rhode Island60,870
Vashon Island3796 Washington10,123
Tigalda Island3591 Alaska0
Saint George Island3590 Alaska100
Catherine Island3487 Alaska0
Hatteras Island3486 North Carolina4,001
Rota3385 Northern Mariana Islands2,477
Sauvie Island3385 Oregon1,078
Grand Isle3282 Vermont3,651
Kent Island3282 Maryland16,812
Pine Island3282 Florida8,235
Saint Thomas3281 U.S. Virgin Islands51,181
Coronation Island3078 Alaska0
Lopez Island3077 Washington2,177
Grand Island2973 New York18,621
Bainbridge Island2872 Washington20,308
Gareloi Island2667 Alaska0
Madeline Island2462 Wisconsin246
Washington Island2461 Wisconsin600
Vinalhaven Island2361 Maine1,235
Manhattan2360 New York1,537,195
San Nicolas Island2359 California0
Alameda Island2359 California73,812
Marquette Island2359 Michigan0
Woronkofski Island2359 Alaska0
Grand Island2258 Michigan45
North Manitou Island2258 Michigan0
Neebish Island2256 Michigan66
Saint John2051 U.S. Virgin Islands4,007
Fenwick Island1538 Delaware8,002
San Miguel Island1538 California0
Grosse Ile9.624.9 Michigan10,894
Conanicut Island9.425.1 Rhode Island5,622
Block Island925 Rhode Island1,051
South Manitou Island821 Michigan0
Mercer Island 7 17  Washington 22,036
Dauphin Island6.2616.2 Alabama1,371
Kelleys Island4.311 Ohio312
Mackinac Island3.79.7 Michigan492
Culebra 11.64 30.9  Puerto Rico 1,314

See also

References

  1. "Table 5.08 - Land Area of Islands: 2000" (PDF). The State of Hawaii Data Book 2004. State of Hawaii. 2004. Retrieved October 25, 2007.
  2. "Kodiak Island". Encyclopædia Britannica (Britannica Concise ed.). Encyclopædia Britannica, Inc. 2007. 9369330. Archived from the original on January 17, 2008. Retrieved October 28, 2007.
  3. Carrara, Paul E.; Ager, Thomas A.; Baichtal, James F.; VanSistine, D. Paco (2003). "Miscellaneous Field Studies Map MF–2424" (PDF). Map of Glacial Limits and Possible Refugia in the Southern Alexander Archipelago, Alaska, During the Late Wisconsin Glaciation. Denver, Colorado: United States Geological Survey. Retrieved October 24, 2007.
  4. Peacock, Elizabeth (December 13, 2004). "Kuiu" (PDF). Glaciers, Mountains, and Salt Water: Assessing Barriers to Movement of a Vagile Species. Reno, Nevada: Alaska Department of Fish and Game. Retrieved October 29, 2007.
  5. "Long Island". Encyclopædia Britannica (Britannica Concise ed.). Encyclopædia Britannica, Inc. 2007. 9370515. Archived from the original on November 5, 2007. Retrieved October 29, 2007.
  6. "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.
  7. "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
  8. 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.
  9. "Mount Desert Island". Encyclopædia Britannica. Encyclopædia Britannica, Inc. 2007. 9054016. Retrieved October 29, 2007.
  10. "Channel Islands". Encyclopædia Britannica (Britannica Concise ed.). Encyclopædia Britannica, Inc. 2007. 9360314. Archived from the original on June 4, 2006. Retrieved October 29, 2007.
  11. "PUERTO RICO FACTS and HISTORY". U.S. Census Bureau. Archived from the original on February 12, 2020. Retrieved May 23, 2008.
  12. "Nantucket". Encyclopædia Britannica. Encyclopædia Britannica, Inc. 2007. 9054798. Retrieved October 29, 2007.
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