US States By Size

The United States of America is a vast federal republic covering part of the southern half of Northern America and extends into the Pacific Ocean through Alaska and Hawaii. It consists of 50 states, of which 48 are contiguous (located within mainland North America), while the other two are located in the Pacific Ocean. These states can be ranked from the smallest to the largest, depending on their total area, water area, or land area. While a state may have a larger total area, its land area may be much smaller because it possesses large territorial waters. Therefore, the states’ ranking depends on the metrics used. Here are the US states by total areas.

Ten Largest US States

10 largest US States
Map of the 10 biggest US states by size.

  1. Although Alaska is one of the two last states to gain admission into the Union, it is, by far, the largest US state by both total and land area. It covers an estimated total area of 1.7 million km2, about 17% of the US total area. Alaska is larger than the combined areas of the next three largest states. It is the world’s seventh-largest country subdivision. Its total land area is about 1.5 million km2 (86%), while the rest is water.
  2. The South Central state of Texas is the second-largest state by total area, covering about 695,662 km2. It has a total land area of about 676,587 km2 (97.3%) and a water area of 19,075 km2 (2.7%).
  3. California, the US' most populous state, covers about 423,970 km2, making it the third-largest state. Its land area of 403,466 km2 is also the country’s third-largest, while the water area of 20,047 km2
  4. Montana is the fourth-largest state with a total area of about 380,800 km2, about 4% of the US total area. Its land area accounts for 99% of the total area, about 376,962 km2. Its waters cover about 3,862 km2, making it the 26th largest state by water area.
  5. New Mexico, the fifth-largest state, covers about 314,917 km2, of which 99.8% is land. Therefore, it is the second-smallest state by water area, at only 757 km2.
  6. Arizona is the sixth-largest state by total area, covering 295,234 km2. Its land area of 294,207 km2 accounts for 99.7% of the total area.
  7. With a total area of 286,382 km2, Nevada is the seventh-largest state. It covers about 3% of the US total area and has a land area of about 284,332 km2 (99.3%).
  8. Colorado is the eighth-largest state by total area, spanning 269,837 km2 or about 2.7% of the national area. It covers a land area of 268,875 km2 (99.6%) and a water area of 962 km2, the 44th largest water area in the country.
  9. Oregon is the ninth-largest state by total area but the tenth-largest by land area. It has a total surface area of about 254,806 km2, of which 248,849 km2 (97.6%) is land. It has the 20th largest water area, at 6,177 km2.
  10. Although Wyoming is the tenth-largest state by total surface area (253,600 km2), it has a slightly larger land area than Oregon, spanning 251,470 km2. However, its water area of 2,130 km2 is the country’s 37th largest water area.
Rank State Total area (km2)
1 Alaska 1,723,337
2 Texas 695,662
3 California 423,970
4 Montana 380,800
5 New Mexico 314,917
6 Arizona 295,234
7 Nevada 286,382
8 Colorado 269,837
9 Oregon 254,806
10 Wyoming 253,600

Ten Smallest States

Map of the 10 smallest US states by size.
  1. Rhode Island is the smallest state in the United States. Rhode Island has a total area of 3,144 km2, including 438 km2 of water.
  2. Delaware is the second smallest state in the country covering 5,130 km2, of which 5,047 km2 is land.
  3. Connecticut covers about 14,357 km2 which makes it the third smallest state, of which 12,559 km2 is land and the rest is water.
  4. New Jersey is the fourth-smallest state by total area and fifth smallest by land area. It covers 22,591 km2, of which 19,047 km2 is land. Its water area is the country’s 27th largest by area at 3,544 km2.
  5. New Hampshire is the fifth smallest state with a total area of 24,214 km2. However, its land area of 23,186 km2 makes it the seventh smallest state by land area.
  6. Vermont is the sixth smallest state by total area (24,923 km2) but the eighth smallest by land area, covering 23,957 km2 of land. Its water area is about 989 km2, the 46th largest state by water area.
  7. Massachusetts covers a surface area of 27,337 km2, of which 20,306 km2 is landmass, and 7,032 km2 is water. It has the sixth-smallest land area and 16th largest water area.
  8. Hawaii, one of the two non-contiguous states, is the 8th smallest state by total area, spanning 28,311 km2. It is the fourth-smallest state by land area, covering 16,638 km2 of land. Its water area of 11,672 km2 (41.2%) is the country’s 13th largest water area.
  9. Maryland covers about 32,133 km2, making it the ninth-smallest state. Its land area of about 25,314 km2 is also the country’s ninth smallest. However, the state’s water area of 6,819 km2 (21%) is the US' 18th-largest water area.
  10. West Virginia is the tenth-smallest state by both total and land area. It spans about 62,755 km2, of which 62,361 km2 is land. At 394 km2, West Virginia has the smallest water area in the country.
Rank State Total Area (km2)

1

Rhode Island

3,144

2

Delaware

5,130

3

Connecticut

14,357

4

New Jersey

22,591

5

New Hampshire

24,214

6

Vermont

24,923

7

Massachusetts

27,337

8

Hawaii

28,311

9

Maryland

32,133

10

West Virginia

62,755

Area By Region

The Western US is the largest region by total area, extending 4.9 million km2, slightly less than half of the country’s total contiguous area. All ten largest states, except Texas, are located in this region.

US States By Size

Rank State Total Area (km2) Land Area (km2) Water Area (km2)
1 Alaska 1,723,337 1,477,953 245,384
2 Texas 695,662 676,587 19,075
3 California 423,967 403,466 20,047
4 Montana 380,831 376,962 3,862
5 New Mexico 314,917 314,161 757
6 Arizona 295,234 294,207 1,026
7 Nevada 286,382 284,332 2,048
8 Colorado 269,837 268,875 962
9 Oregon 254,806 248,849 6,177
10 Wyoming 253,600 251,470 1,864
11 Michigan 250,487 146,435 104,052
12 Minnesota 225,163 206,232 18,930
13 Utah 219,882 212,818 7,064
14 Idaho 216,443 214,045 2,398
15 Kansas 213,100 211,754 1,346
16 Nebraska 200,330 198,974 1,356
17 South Dakota 199,729 196,350 3,379
18 Washington 184,661 172,119 12,542
19 North Dakota 183,108 178,711 4,397
20 Oklahoma 181,037 177,660 3,377
21 Missouri 180,540 178,040 2,501
22 Florida 170,312 138,887 31,424
23 Wisconsin 169,635 140,268 29,367
24 Georgia 153,910 148,959 4,951
25 Illinois 149,995 143,793 6,202
26 Iowa 145,746 144,669 1,077
27 New York 141,297 122,057 19,240
28 North Carolina 139,391 125,920 13,471
29 Arkansas 137,732 134,771 2,961
30 Alabama 135,767 131,171 4,597
31 Louisiana 135,659 111,898 23,761
32 Mississippi 125,438 121,531 3,907
33 Pennsylvania 119,280 115,883 3,397
34 Ohio 116,098 105,829 10,269
35 Virginia 110,787 102,279 8,508
36 Tennessee 109,153 106,798 2,355
37 Kentucky 104,656 102,269 2,387
38 Indiana 94,326 92,789 1,537
39 Maine 91,633 79,883 11,750
40 South Carolina 82,933 77,857 5,076
41 West Virginia 62,755 62,361 394
42 Maryland 32,133 25,314 6,819
43 Hawaii 28,311 16,638 11,672
44 Massachusetts 27,337 20,306 7,032
45 Vermont 24,923 23,957 989
46 New Hampshire 24,214 23,186 1,028
47 New Jersey 22,591 19,047 3,544
48 Connecticut 14,357 12,559 1,798
49 Delaware 5,130 5,047 1,399
50 Rhode Island 3,114 2,678 438
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