# 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 km$^2$). Mainland areas cut by human-made canals are not considered islands.

## Islands over 75 square miles (190 km$^2$)

| Rank | Island's Name | Area (sq mi) | Area (km$^2$) | Location | Population (2010) |
| 1 | Hawaii Island | 4,028 | 10,433 | Hawaii | 185,079 |
| 2 | Kodiak Island | 3,588 | 9,293 | Alaska | 13,592 |
| 3 | Puerto Rico | 3,513 | 9,100 | Puerto Rico | 3,285,874 |
| 4 | Prince of Wales Island | 2,577 | 6,675 | 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 | Alaska | 8,532 |
| 11 | Long Island | 1,401 | 3,629 | New York | 7,568,304 |
| 12 | Revillagigedo Island | 1,145 | 2,965 | Alaska | 13,477 |
| 13 | Kupreanof Island | 1,086 | 2,813 | 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 | Alaska | 10 |
| 17 | Maui | 727 | 1,883 | Hawaii | 144,444 |
| 18 | Afognak | 698 | 1,809 | Alaska | 169 |
| 19 | Umnak | 692 | 1,793 | Alaska | 39 |
| 20 | Oahu | 597 | 1,545 | Hawaii | 953,207 |
| 21 | Kauai | 552 | 1,430 | 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 | 673 | Hawaii | 7,345 |
| 28 | Dall Island | 253 | 655 | Alaska | 20 |
| 29 | Wrangell Island | 216 | 560 | Alaska | 2,401 |
| 30 | Mitkof Island | 211 | 546 | Alaska | 3,364 |
| 31 | Padre Island | 209 | 542 | Texas | 2,816 |
| 32 | Guam | 209 | 541 | Guam | 154,805 |
| 33 | Isle Royale | 206 | 534 | 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 | 364 | 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 | 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 | 280 | Maine | 10,424 |
| 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 | 254 | 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 |

## Islands 5–75 square miles (13–194 km$^2$)

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 km$^2$).
| Island's Name | Area (sq mi) | Area (km$^2$) | Location | Population | Density (per km$^2$) |
| Heceta Island | 70 | 181 | Alaska | 14 | 0.08 |
| Niihau | 70 | 180 | 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 | Alaska | 0 | 0 |
| Tutuila | 52 | 135 | American Samoa | 55,876 | 413.9 |
| Esther Island | 52 | 133 | Alaska | 31 | 0.23 |
| Vieques | 51 | 132 | Puerto Rico | 9,106 | 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 | 124 | Massachusetts | 9,520 | 76.7 |
| Davis Island | 46 | 120 | Louisiana Mississippi | 0 | 0 |
| Kagalaska Island | 45 | 116 | Alaska | 0 | 0 |
| Kahoolawe | 45 | 116 | 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 | 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 | 12.7 |
| Grand Isle | 32 | 82 | Vermont | 3,651 | 44.5 |
| Kent Island | 32 | 82 | Maryland | 16,812 | 205 |
| Pine Island | 32 | 82 | Florida | 8,235 | 100 |
| Saint Thomas | 32 | 81 | U.S. Virgin Islands | 51,181 | 632 |
| 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 |
| Mon Louis Island | 21.3 | 55.3 | Alabama | | |
| 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 |
| St. Vincent Island | 19.5 | 50.5 | Florida | 0 | 0 |
| 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 | 0.15 |
| Roanoke Island | 17.95 | 46.5 | North Carolina | 6,724 | 144 |
| Georgetown Island | 17.4 | 45.0 | Maine | 1,058 | 23.5 |
| Santa Rosa Island | 17.2 | 44.6 | Florida | | |
| Taʻū | 17.11 | 44.31 | American Samoa | 790 | 17.8 |
| Agrihan | 17.01 | 44.05 | Northern Mariana Islands | 0 | 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 | 0 |
| Wellesley Island | 13 | 33 | New York | 368 | 11 |
| Islesboro Island | 12.4 | 32.1 | Maine | 583 | 18.2 |
| 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 | 500 |
| St. George Island | 11.7 | 30.3 | Florida | 990 | 32.7 |
| Culebra | 11.64 | 30.1 | Puerto Rico | 1,314 | 42.5 |
| North Haven | 11.6 | 30.1 | Maine | 417 | 13.9 |
| Bogue Banks | 11.3 | 29.1 | North Carolina | ~6,600 | ~22 |
| Kiawah Island | 11.17 | 28.93 | South Carolina | 1,769 | 61.1 |
| Swan's Island | 10.9 | 28.4 | Maine | 355 | 12.5 |
| Mockhorn Island | 10.9 | 28.3 | Virginia | 0 | 0 |
| Isle au Haut | 10.7 | 27.6 | Maine | 92 | 3.3 |
| Marsh Island | 10.2 | 26.4 | Maine | ~7,000 | 265 |
| Grosse Ile | 9.6 | 24.9 | Michigan | 10,894 | 438 |
| Sebascodegan Island | 9.6 | 24.8 | Maine | <5,000 | <200 |
| Conanicut Island | 9.4 | 25.1 | Rhode Island | 5,622 | 224 |
| Lummi Island | 9.25 | 24 | Washington | 822 | 351 |
| Block Island | 9 | 25 | Rhode Island | 1,051 | 42 |
| Westport Island | 8.81 | 22.82 | Maine | 719 | 31.5 |
| 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 | ~0.9-32 |
| Absecon Island | 8.2 | 21.2 | New Jersey | 57,457 | 2,710 |
| 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 |
| Grahams Island | 6.63 | 17.18 | North Dakota | | |
| Sugar Island | 6.575 | 17.03 | Maine | 0 | 0 |
| Blakely Island | 6.5 | 16.9 | Washington | 56 | 3.3 |
| Chincoteague Island | 6.41 | 16.6 | Virginia | 2,875 | 449 |
| 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 |
| Blakeley Island | 5.36 | 13.88 | Alabama | | |
| Wallops Island | 5.24 | 13.6 | Virginia | | |
| Fox Island | 5.2 | 13.5 | Washington | 3,921 | 290 |
| Gardiners Island | 5.184 | 13.43 | New York | 0 | 0 |