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.
Islands over 250 square miles (650 km2)
Rank |
Island's Name |
Area (sq mi) |
Area (km2) |
Location |
Population (2010) |
1 |
Hawaii Island (the Big Island) |
4,028 |
10,433 |
Hawaii |
185,079 |
2 |
Kodiak Island |
3,588 |
9,293 |
Alaska |
13,592 |
3 |
Puerto Rico |
3,363 |
8,710 |
Puerto Rico |
3,725,789 |
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 |
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) |
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 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 Island |
70 |
181 |
Alaska |
14 |
Niihau |
70 |
180 |
Hawaii |
160 |
Saipan |
69 |
180 |
Northern Mariana Islands |
62,392 |
Tugidak Island |
69 |
180 |
Alaska |
0 |
Hawkins Island |
67 |
175 |
Alaska |
4 |
Yunaska Island |
67 |
172 |
Alaska |
0 |
Sitkinak Island |
65 |
169 |
Alaska |
0 |
Akun Island |
65 |
168 |
Alaska |
0 |
Shuyak Island |
65 |
168 |
Alaska |
0 |
Chuginadak Island |
65 |
167 |
Alaska |
0 |
Sukkwan Island |
65 |
167 |
Alaska |
9 |
Galveston Island |
64 |
166 |
Texas |
58,175 |
Matagorda Island |
61 |
157 |
Texas |
0 |
Great Sitkin Island |
60 |
156 |
Alaska |
0 |
Staten Island |
59 |
153 |
New York |
443,728 |
Deer Island |
58 |
152 |
Alaska |
0 |
Duke Island |
57 |
149 |
Alaska |
-1? |
Orcas Island |
57 |
148 |
Washington |
4,453 |
Cumberland Island |
57 |
147 |
Georgia |
0 |
San Clemente Island |
57 |
147 |
California |
0 |
Uganik Island |
57 |
147 |
Alaska |
0 |
St. Michael Island |
56 |
145 |
Alaska |
915 |
Stuart Island |
56 |
145 |
Alaska |
0 |
Hilton Head Island |
55 |
144 |
South Carolina |
33,862 |
Beaver Island |
55 |
144 |
Michigan |
551 |
San Juan Island |
55 |
143 |
Washington |
6,822 |
Suemez Island |
52 |
135 |
Alaska |
0 |
Tutuila |
52 |
135 |
American Samoa |
55,876 |
Esther Island |
52 |
133 |
Alaska |
31 |
Vieques |
51 |
132 |
Puerto Rico |
9,106 |
Sanak Island |
50 |
128 |
Alaska |
0 |
Sugar Island |
49 |
128 |
Michigan |
652 |
Bois Blanc Island |
49 |
127 |
Michigan |
71 |
Nantucket |
48 |
124 |
Massachusetts |
9,520 |
Kagalaska Island |
45 |
116 |
Alaska |
0 |
Kahoolawe |
45 |
116 |
Hawaii |
0 |
Long Island |
45 |
115 |
Alaska |
0 |
Chirikof Island |
44 |
115 |
Alaska |
0 |
Wadmalaw Island |
42 |
109 |
South Carolina |
2,611 |
Antelope Island |
42 |
109 |
Utah |
0 |
Dolgoi Island |
41 |
107 |
Alaska |
0 |
Fidalgo Island |
41 |
107 |
Washington |
20,700 |
Baker Island |
41 |
105 |
Alaska |
-1? |
Camano Island |
40 |
105 |
Washington |
13,358 |
Saint Paul Island |
40 |
104 |
Alaska |
532 |
Sedanka Island |
40 |
103 |
Alaska |
0 |
Deer Isle |
<40 |
<102 |
Maine |
<3,028 |
Tinian |
39 |
102 |
Northern Mariana Islands |
3,540 |
Aquidneck Island/Rhode Island |
38 |
98 |
Rhode Island |
60,870 |
Vashon Island |
37 |
96 |
Washington |
10,123 |
Tigalda Island |
35 |
91 |
Alaska |
0 |
Saint George Island |
35 |
90 |
Alaska |
100 |
Catherine Island |
34 |
87 |
Alaska |
0 |
Hatteras Island |
34 |
86 |
North Carolina |
4,001 |
Rota |
33 |
85 |
Northern Mariana Islands |
2,477 |
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 |
Lopez Island |
30 |
77 |
Washington |
2,177 |
Grand Island |
29 |
73 |
New York |
18,621 |
Bainbridge Island |
28 |
72 |
Washington |
20,308 |
Gareloi Island |
26 |
67 |
Alaska |
0 |
Madeline Island |
24 |
62 |
Wisconsin |
246 |
Washington Island |
24 |
61 |
Wisconsin |
600 |
Vinalhaven Island |
23 |
61 |
Maine |
1,235 |
Manhattan |
23 |
60 |
New York |
1,537,195 |
San Nicolas Island |
23 |
59 |
California |
0 |
Alameda Island |
23 |
59 |
California |
73,812 |
Marquette Island |
23 |
59 |
Michigan |
0 |
Woronkofski Island |
23 |
59 |
Alaska |
0 |
Grand Island |
22 |
58 |
Michigan |
45 |
North Manitou Island |
22 |
58 |
Michigan |
0 |
Neebish Island |
22 |
56 |
Michigan |
66 |
Saint John |
20 |
51 |
U.S. Virgin Islands |
4,007 |
Fenwick Island |
15 |
38 |
Delaware |
8,002 |
San Miguel Island |
15 |
38 |
California |
0 |
Grosse Ile |
9.6 |
24.9 |
Michigan |
10,894 |
Conanicut Island |
9.4 |
25.1 |
Rhode Island |
5,622 |
Block Island |
9 |
25 |
Rhode Island |
1,051 |
South Manitou Island |
8 |
21 |
Michigan |
0 |
Mercer Island |
7 |
17 |
Washington |
22,036 |
Dauphin Island |
6.26 |
16.2 |
Alabama |
1,371 |
Kelleys Island |
4.3 |
11 |
Ohio |
312 |
Mackinac Island |
3.7 |
9.7 |
Michigan |
492 |
Culebra |
11.64 |
30.9 |
Puerto Rico |
1,314 |
Images for kids
-
Scale depiction of the 5 largest islands in the US, with some other significant islands
See also
In Spanish: Anexo:Islas de los Estados Unidos para niños