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 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.
2 )[ edit ] Rank Island's Name Area (sq mi) Area (km2 ) Location Population (2010) 1 Hawaii Island 4,028[ 1] 10,433[ 1] Hawaii 185,079 2 Kodiak Island 3,588[ 2] 9,293[ 2] Alaska 13,592[ 2] 3 Puerto Rico 3,513[ 3] 9,100[ 3] Puerto Rico 3,285,874[ 4] 4 Prince of Wales Island 2,577 6,675[ 5] [ 6] Alaska 5,559 5 Chichagof Island 2,080 5,388 Alaska 1,342 6 St. Lawrence Island 1,983 5,135 Alaska 1,352 7 Admiralty Island 1,684 4,362 Alaska 650 8 Nunivak Island 1,625 4,209 Alaska 191 9 Unimak Island 1,590 4,119 Alaska 35 10 Baranof Island 1,570 4,065[ 5] Alaska 8,532 11 Long Island 1,401[ 7] 3,629[ 7] New York 7,568,304[ 7] 12 Revillagigedo Island 1,145 2,965[ 6] Alaska 13,477 13 Kupreanof Island 1,086 2,813[ 6] Alaska 584 14 Unalaska Island 1,051 2,722 Alaska 1,759 15 Nelson Island 843 2,183 Alaska 1,197 16 Kuiu Island 758 1,962[ 6] Alaska 10 17 Maui 727[ 1] 1,883[ 1] Hawaii 144,444 18 Afognak 698 1,809 Alaska 169 19 Umnak 692 1,793 Alaska 39 20 Oahu 597[ 1] 1,545[ 1] Hawaii 953,207 21 Kauai 552[ 1] 1,430[ 1] Hawaii 67,091 22 Atka Island 410 1,061 Alaska 61 23 Attu Island 346 896 Alaska 0 24 Etolin Island 336 870 Alaska 15 25 Montague Island 305 790 Alaska 0 26 Adak Island 280 725 Alaska 326 27 Molokai 260[ 1] 673[ 1] Hawaii 7,345 28 Dall Island 253 655[ 5] Alaska 20 29 Wrangell Island 216 560 Alaska 2,401 30 Mitkof Island 211 546[ 6] Alaska 3,364 31 Padre Island 209[ 8] 542 Texas 2,816 32 Guam 209 541 Guam 154,805 33 Isle Royale 206[ 9] 534[ 9] Michigan 0 34 Tanaga Island 204 529 Alaska 0 35 Zarembo Island 185 478 Alaska 0 36 Unga Island 177 461 Alaska 0 37 Amlia 176 459 Alaska 0 38 Hinchinbrook Island 170 445 Alaska 5 39 Kosciusko Island 169 438 Alaska 52 40 Whidbey Island 169 437 Washington 58,211 41 Kruzof Island 168 435 Alaska 0 42 Kanaga Island 142 369 Alaska 0 43 Lanai 141[ 1] 364[ 1] Hawaii 3,193 44 St. Matthew Island 137 354 Alaska 0 45 Annette Island 132 342 Alaska 1,447 46 Akutan Island 129 334 Alaska 713 47 Drummond Island 125[ 10] 324 Michigan 1,058 48 Hagemeister Island 120 312 Alaska 0 49 Nagai Island 120 310 Alaska 0 50 Amchitka 119 309 Alaska 0 51 Sitkalidak Island 119 309 Alaska 0 52 Mount Desert Island 108[ 11] 280[ 11] Maine 10,424[ 11] 53 Kiska 107 278 Alaska 0 54 Knight Island 101 260 Alaska 0 55 Marsh Island 100 259 Louisiana 0 56 Santa Cruz Island 98[ 12] 254[ 12] California 2 57 Gravina Island 95 245 Alaska 50 58 Martha's Vineyard 91 236 Massachusetts 14,901 59 Agattu 90 234 Alaska 0 60 Semisopochnoi Island 86 224 Alaska 0 61 Johns Island 84 217 South Carolina 11,477 62 Seguam Island 83 215 Alaska 1 63 Saint Croix 84 212 U.S. Virgin Islands 53,234 64 Yakobi Island 82 212 Alaska 0 65 Santa Rosa Island 81 209 California 2 66 Raspberry Island 77 200 Alaska 2 67 Douglas Island 77 199 Alaska 5,297 68 Santa Catalina Island 75 194 California 3,696
2 )[ edit ] 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 Density (per km2 ) Heceta Island 70 181 Alaska 14 0.08 Niihau 70[ 1] 180[ 1] Hawaii 160 0.9 Saipan 69 180 Northern Mariana Islands 62,392 346 Tugidak Island 69 180 Alaska 0 0 Edisto Island 68 176 South Carolina 2,301 13 Hawkins Island 67 175 Alaska 4 0.023 Yunaska Island 67 172 Alaska 0 0 Sitkinak Island 65 169 Alaska 0 0 Akun Island 65 168 Alaska 0 0 Shuyak Island 65 168 Alaska 0 0 Chuginadak Island 65 167 Alaska 0 0 Sukkwan Island 65 167 Alaska 9 0.05 Galveston Island 64 166 Texas 58,175 350 Matagorda Island 61 157 Texas 0 0 Great Sitkin Island 60 156 Alaska 0 0 Staten Island 59 153 New York 443,728 2,900 Deer Island 58 152 Alaska 0 0 Duke Island 57 149 Alaska 0 0 Orcas Island 57 148 Washington 4,453 0.03 Cumberland Island 57 147 Georgia 0 0 San Clemente Island 57 147 California 0 0 Uganik Island 57 147 Alaska 0 0 St. Michael Island 56 145 Alaska 915 6.3 Stuart Island 56 145 Alaska 0 0 Hilton Head Island 55 144 South Carolina 33,862 235 Beaver Island 55 144 Michigan 551 3.8 San Juan Island 55 143 Washington 6,822 47.7 Suemez Island 52 135[ 5] Alaska 0 0 Tutuila 52 135 American Samoa 55,876 413.9 Esther Island 52 133 Alaska 31 0.23 Vieques 51 132[ 13] Puerto Rico 9,106[ 13] 69 Sanak Island 50 128 Alaska 0 0 Sugar Island 49 128 Michigan 652 5 Bois Blanc Island 49 127 Michigan 71 0.56 Nantucket 48[ 14] 124[ 14] Massachusetts 9,520[ 14] 76.7 Davis Island 46 120 Louisiana Mississippi 0 0 Kagalaska Island 45 116 Alaska 0 0 Kahoolawe 45[ 1] 116[ 1] Hawaii 0 0 Long Island 45 115 Alaska 0 0 Chirikof Island 44 115 Alaska 0 0 Wadmalaw Island 42 109 South Carolina 2,611 23.9 Antelope Island 42 109 Utah 0 0 Dolgoi Island 41 107 Alaska 0 0 Fidalgo Island 41 107 Washington 20,700 193 Baker Island 41 105[ 5] Alaska 0 0 Camano Island 40 105 Washington 13,358 127 Saint Paul Island 40 104 Alaska 532 5 Sedanka Island 40 103 Alaska 0 0 Deer Isle <40 <102 Maine <3,028 29 Tinian 39 102 Northern Mariana Islands 3,540 34.7 Aquidneck Island/Rhode Island 38 98 Rhode Island 60,870 621 Vashon Island 37 96 Washington 10,123 105 Tigalda Island 35 91 Alaska 0 0 Saint George Island 35 90 Alaska 100 1.1 Catherine Island 34 87 Alaska 0 0 Hatteras Island 34 86 North Carolina 4,001 46.5 Rota 33 85 Northern Mariana Islands 2,477 29 Sauvie Island 33 85 Oregon 1,078 Grand Isle 32 82 Vermont 3,651 Kent Island 32 82 Maryland 16,812 Pine Island 32 82 Florida 8,235 Saint Thomas 32 81 U.S. Virgin Islands 51,181 Coronation Island 30 78 Alaska 0 0 Lopez Island 30 77 Washington 2,177 28 Grand Island 29 73 New York 18,621 255 Bainbridge Island 28 72 Washington 20,308 282 Gareloi Island 26 67 Alaska 0 0 Assateague Island 24.4 63 Maryland Virginia 0 0 Madeline Island 24 62 Wisconsin 246 3.9 Washington Island 24 61 Wisconsin 600 9.8 Vinalhaven Island 23 61 Maine 1,235 20 Manhattan 23 60 New York 1,537,195 25,619 San Nicolas Island 23 59 California 0 0 Alameda Island 23 59 California 73,812 1,251 Marquette Island 23 59 Michigan 0 0 Woronkofski Island 23 59 Alaska 0 0 Grand Island 22 58 Michigan 45 0.8 North Manitou Island 22 58 Michigan 0 0 Neebish Island 22 56 Michigan 66 1.2 Oak Island 21 53 North Carolina 8,386 158 Tuxekan Island 20 53 Alaska 0 0 Saint John 20 51 U.S. Virgin Islands 4,007 78 Harstine Island 18.65 48.3 Washington 1,412 29.4 Amelia Island 18.2 47.1 Florida 10,716 228 Pagan 18 47 Northern Mariana Islands 7 Roanoke Island 17.95 46.5 North Carolina 6,724 144 Georgetown Island 17.4 45.0 Maine 1,058 Taʻū 17.11 44.31 American Samoa 790 17.8 Agrihan 17.01 44.05 Northern Mariana Islands 0 Sanibel Island 16.18 41.90 Florida 6,382 152 Stockton Island 15.5 40 Wisconsin 0 0 Key Largo 15.25 39.49 Florida 12,447 315 Fenwick Island 15 38 Delaware Maryland 8,002 210.5 San Miguel Island 15 38 California 0 0 Anatahan 13.09 33.91 Northern Mariana Islands 0 Wellesley Island 13 33 New York 368 11 Islesboro Island 12.4 32.1 Maine 583 Outer Island 12.3 31.8 Wisconsin 0 0 Shelter Island 12.19 31.58 New York 2,413 76.4 Marco Island 12.1 31.5 Florida 15,760 Culebra 11.64 30.9 Puerto Rico 1,314 North Haven 11.6 30.1 Maine 417 Bogue Banks 11.3 29.1 North Carolina ~6,600 Kiawah Island 11.17 28.93 South Carolina 1,769 Swan's Island 10.9 28.4 Maine 355 Mockhorn Island 10.9 28.3 Virginia 0 Isle au Haut 10.7 27.6 Maine 92 Marsh Island 10.2 26.4 Maine ~7,000 Grosse Ile 9.6 24.9 Michigan 10,894 Sebascodegan Island 9.6 24.8 Maine <5,000 Conanicut Island 9.4 25.1 Rhode Island 5,622 Lummi Island 9.25 24 Washington 822 Block Island 9 25 Rhode Island 1,051 Westport Island 8.81 22.82 Maine 719 Cypress Island 8.6 22.3 Washington 40 1.8 Guemes Island 8.6 22.3 Washington 605 27 Ocracoke Island 8.6 22.3 North Carolina 797 35.7 Grindstone Island 8.5 22.1 New York ~20-700 Absecon Island 8.2 21.2 New Jersey 57,457 Grand Isle 8.17 21.17 Louisiana 1,005 47.5 South Manitou Island 8 21 Michigan 0 0 Oak Island 7.9 20.3 Wisconsin 0 0 Garden Island 7.8 20.2 Michigan 0 0 Anderson Island 7.75 20.1 Washington 1,037 51.6 Arrowsic Island 7.75 20.07 Maine 477 23.8 Shaw Island 7.7 20 Washington 240 12 Bulls Island 7.66 19.8 South Carolina 0 0 Puget Island 7.5 19.4 Washington 831 42.8 Naushon Island 7.4 19 Massachusetts 30 1.57 Mercer Island 7 17 Washington 22,036 1,296 McNeil Island 6.63 17.2 Washington 214 12.4 Sugar Island 6.575 17.03 Maine 0 0 Blakely Island 6.5 16.9 Washington 56 3.3 Marrowstone Island 6.3 16.4 Washington 844 51.5 Dauphin Island 6.26 16.2 Alabama 1,371 84.6 Verona Island 6.24 16.16 Maine 507 31.4 Shemya 5.9 15.3 Alaska 0 0 Prudence Island 5.57 14.43 Rhode Island 278 19.3 South Core Banks 5.5 14.2 North Carolina 0 0 High Island (Michigan) 5.5 14.1 Michigan 0 0 South Fox Island 5.4 13.9 Michigan 0 0 Fox Island 5.2 13.5 Washington 3,921 290 Gardiners Island 5.184 13.43 New York 0 0
^ a b c d e f g h i j k l m n o p "Table 5.08 - Land Area of Islands: 2000" (PDF) . The State of Hawaii Data Book 2004 . State of Hawaii . 2004. Retrieved October 25, 2007 . ^ a b c "Kodiak Island" . Encyclopædia Britannica Encyclopædia Britannica, Inc. 2007. 9369330. Archived from the original on January 17, 2008. Retrieved October 28, 2007 . ^ a b "State Area Measurements and Internal Point Coordinates" . United States Census Bureau . Retrieved February 24, 2024 .^ "Table 2. Resident Population for the 50 States, the District of Columbia, and Puerto Rico: 2020 Census" (PDF) . United States Census Bureau . April 26, 2021. Retrieved April 26, 2021 .^ a b c d e 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 . ^ a b c d e 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 . ^ a b c "Long Island" . Encyclopædia Britannica Encyclopædia Britannica, Inc. 2007. 9370515. Archived from the original on November 5, 2007. Retrieved October 29, 2007 . ^ "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 . ^ a b "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 ^ 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 . ^ a b c "Mount Desert Island" . Encyclopædia Britannica Encyclopædia Britannica, Inc. 2007. 9054016. Retrieved October 29, 2007 . ^ a b "Channel Islands" . Encyclopædia Britannica Encyclopædia Britannica, Inc. 2007. 9360314. Archived from the original on June 4, 2006. Retrieved October 29, 2007 . ^ a b "PUERTO RICO FACTS and HISTORY" . U.S. Census Bureau . Archived from the original on February 12, 2020. Retrieved May 23, 2008 .^ a b c "Nantucket" . Encyclopædia Britannica Encyclopædia Britannica, Inc. 2007. 9054798. Retrieved October 29, 2007 . 
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