In mi² and then in km² :
Alabama 52,420.07 135,767
Alaska 665,384.04 1,723,337
Arizona 113,990.30 295,234
Arkansas 53,178.55 137,732
California 163,694.74 423,967
Colorado 104,093.67 269,601
Connecticut 5,543.41 14,357
Delaware 2,488.72 6,446
Florida 65,757.70 170,312
Georgia 59,425.15 153,910
Hawaii 10,931.72 28,313
Idaho 83,568.95 216,443
Illinois 57,913.55 149,995
Indiana 36,419.55 94,326
Iowa 56,272.81 145,746
Kansas 82,278.36 213,100
Kentucky 40,407.80 104,656
Louisiana 52,378.13 135,659
Maine 35,379.74 91,633
Maryland 12,405.93 32,131
Massachusetts 10,554.39 27,336
Michigan 96,713.51 250,487
Minnesota 86,935.83 225,163
Mississippi 48,431.78 125,438
Missouri 69,706.99 180,540
Montana 147,039.71 380,831
Nebraska 77,347.81 200,330
Nevada 110,571.82 286,380
New Hampshire 9,349.16 24,214
New Jersey 8,722.58 22,591
New Mexico 121,590.30 314,917
New York 54,554.98 141,297
North Carolina 53,819.16 139,391
North Dakota 70,698.32 183,108
Ohio 44,825.58 116,098
Oklahoma 69,898.87 181,037
Oregon 98,378.54 254,799
Pennsylvania 46,054.35 119,280
Puerto Rico 5,324.84 13,791
Rhode Island 1,544.89 4,001
South Carolina 32,020.49 82,933
South Dakota 77,115.68 199,729
Tennessee 42,144.25 109,153
Texas 268,596.46 695,662
Utah 84,896.88 219,882
Vermont 9,616.36 24,906
Virginia 42,774.93 110,787
Washington 71,297.95 184,661
West Virginia 24,230.04 62,756
Wisconsin 65,496.38 169,635
Wyoming 97,813.01 253,335
Alaska, USA - 656,425 square miles (571,951.26 square miles of which is land).
The total land area of the 50 states in the USA is approximately 3.8 million square miles.
Alaska covers approximately 663,300 square miles, making it the largest state in the United States by land area.
The total land area of the United States is approximately 3.8 million square miles. This includes all 50 states and territories.
Mississippi, USA - With a total area of 48,430 square miles, Mississippi ranks 32nd in size among the 50 states.
The 50 states of the US measure a total of 3,794,066 square miles, or 9,826,630 km²
Oklahoma's total area covers 69,898 square miles. In terms of total areas, Oklahoma ranks number 20 out of all 50 states of the United States. Alaska's rank is one on this list with about 663,267 square miles.
Rhode Island is the smallest of the 50 US States.
The state of Florida has a land area of 65,755 Square Miles.
District of Columbia with 51 68.25 square miles (176.75 square km)
Missouri's total area is 69,704.31 square miles (21st largest of the 50 states).
More than that: Ohio, USA - 44,825 square miles (34th largest of the 50 US states).