Alaska. Full list: http://encyclopedia.thefreedictionary.com/List%20of%20U.S.%20states%20by%20area Land area Alaska - 1,481,347 km2 (571,951 miles2) Texas - 678,051 km2 (261,797 miles2) California - 403,933 km2 (155,959 miles2) Montana - 376,979 km2 (145,552 miles2) New Mexico - 314,309 km2 (121,356 miles2) Arizona - 294,312 km2 (113,635 miles2) Nevada - 284,448 km2 (109,826 miles2) Colorado - 268,627 km2 (103,718 miles2) Wyoming - 251,489 km2 (97,100 miles2) Oregon - 248,631 km2 (95,997 miles2) Idaho - 214,314 km2 (82,747 miles2) Utah - 212,751 km2 (82,144 miles2) Kansas - 211,900 km2 (81,815 miles2) Minnesota - 206,189 km2 (79,610 miles2) Nebraska - 199,099 km2 (76,872 miles2) South Dakota - 196,540 km2 (75,885 miles2) North Dakota - 178,647 km2 (68,976 miles2) Missouri - 178,414 km2 (68,886 miles2) Oklahoma - 177,847 km2 (68,667 miles2) Washington - 172,348 km2 (66,544 miles2) Georgia - 149,976 km2 (57,906 miles2) Michigan - 147,121 km2 (56,804 miles2) Iowa - 144,701 km2 (55,869 miles2) Illinois - 143,961 km2 (55,584 miles2) Wisconsin - 140,663 km2 (54,310 miles2) Florida - 139,670 km2 (53,927 miles2) Arkansas - 134,856 km2 (52,068 miles2) Alabama - 131,426 km2 (50,744 miles2) North Carolina - 126,161 km2 (48,711 miles2) New York - 122,283 km2 (47,214 miles2) Mississippi - 121,488 km2 (46,907 miles2) Pennsylvania - 116,074 km2 (44,817 miles2) Louisiana - 112,825 km2 (43,562 miles2) Tennessee - 106,752 km2 (41,217 miles2) Ohio - 106,056 km2 (40,948 miles2) Kentucky - 102,896 km2 (39,728 miles2) Virginia - 102,548 km2 (39,594 miles2) Indiana - 92,895 km2 (35,867 miles2) Maine - 79,931 km2 (30,862 miles2) South Carolina - 77,983 km2 (30,109 miles2) West Virginia - 62,361 km2 (24,078 miles2) Maryland - 25,314 km2 (9,774 miles2) Vermont - 23,956 km2 (9,250 miles2) New Hampshire - 23,227 km2 (8,968 miles2) Massachusetts - 20,306 km2 (7,840 miles2) New Jersey - 19,211 km2 (7,417 miles2) Hawaii - 16,635 km2 (6,423 miles2) Connecticut - 12,548 km2 (4,845 miles2) Delaware - 5,060 km2 (1,954 miles2) Rhode Island - 2,706 km2 (1,045 miles2)