| Rank |
County |
Land Area |
| 1 |
YukonKoyukuk Census Area, Alaska
|
145,504.8
|
| 2 |
North Slope Borough, Alaska
|
88,695.4
|
| 3 |
Bethel Census Area, Alaska
|
40,570
|
| 4 |
Northwest Arctic Borough, Alaska
|
35,572.6
|
| 5 |
ValdezCordova Census Area, Alaska
|
34,239.9
|
| 6 |
Southeast Fairbanks Census Area, Alaska
|
24,768.8
|
| 7 |
MatanuskaSusitna Borough, Alaska
|
24,607.9
|
| 8 |
Lake and Peninsula Borough, Alaska
|
23,652.0
|
| 9 |
Nome Census Area, Alaska
|
22,961.8
|
| 10 |
San Bernardino County, California
|
20,056.9
|
| 11 |
Coconino County, Arizona
|
18,618.9
|
| 12 |
Dillingham Census Area, Alaska
|
18,568.8
|
| 13 |
Nye County, Nevada
|
18,181.9
|
| 14 |
Elko County, Nevada
|
17,169.8
|
| 15 |
Wade Hampton Census Area, Alaska
|
17,081.4
|
| 16 |
Kenai Peninsula Borough, Alaska
|
16,075.3
|
| 17 |
Mohave County, Arizona
|
13,311.1
|
| 18 |
Denali Borough, Alaska
|
12,751.4
|
| 19 |
Apache County, Arizona
|
11,197.5
|
| 20 |
Lincoln County, Nevada
|
10,633.2
|
| 21 |
Sweetwater County, Wyoming
|
10,426.6
|
| 22 |
Inyo County, California
|
10,180.9
|
| 23 |
Harney County, Oregon
|
10,133.2
|
| 24 |
Navajo County, Arizona
|
9,950.4
|
| 25 |
Malheur County, Oregon
|
9,887.5
|
| 26 |
Humboldt County, Nevada
|
9,640.8
|
| 27 |
Maricopa County, Arizona
|
9,200.1
|
| 28 |
Pima County, Arizona
|
9,187.0
|
| 29 |
Fremont County, Wyoming
|
9,183.8
|
| 30 |
White Pine County, Nevada
|
8,875.6
|
| 31 |
Idaho County, Idaho
|
8,477.4
|
| 32 |
Lake County, Oregon
|
8,139.0
|
| 33 |
Kern County, California
|
8,131.9
|
| 34 |
Yavapai County, Arizona
|
8,123.5
|
| 35 |
Carbon County, Wyoming
|
7,897.6
|
| 36 |
Clark County, Nevada
|
7,891.4
|
| 37 |
San Juan County, Utah
|
7,820.0
|
| 38 |
Owyhee County, Idaho
|
7,665.5
|
| 39 |
Yakutat City and Borough, Alaska
|
7,649.5
|
| 40 |
HoonahAngoon Census Area, Alaska
|
7,524.9
|
| 41 |
Fairbanks North Star Borough, Alaska
|
7,338.2
|
| 42 |
Riverside County, California
|
7,206.5
|
| 43 |
Aleutians East Borough, Alaska
|
6,981.9
|
| 44 |
Park County, Wyoming
|
6,942.1
|
| 45 |
Tooele County, Utah
|
6,941.4
|
| 46 |
Catron County, New Mexico
|
6,923.7
|
| 47 |
Aroostook County, Maine
|
6,671.3
|
| 48 |
Socorro County, New Mexico
|
6,646.7
|
| 49 |
Otero County, New Mexico
|
6,613.2
|
| 50 |
Millard County, Utah
|
6,572.4
|
| 51 |
Kodiak Island Borough, Alaska
|
6,549.6
|
| 52 |
Washoe County, Nevada
|
6,302.4
|
| 53 |
Siskiyou County, California
|
6,277.9
|
| 54 |
St Louis County, Minnesota
|
6,247.4
|
| 55 |
Brewster County, Texas
|
6,183.7
|
| 56 |
Cochise County, Arizona
|
6,165.7
|
| 57 |
Chaves County, New Mexico
|
6,065.3
|
| 58 |
Pershing County, Nevada
|
6,036.6
|
| 59 |
Cherry County, Nebraska
|
5,960.4
|
| 60 |
Fresno County, California
|
5,958.0
|
| 61 |
Klamath County, Oregon
|
5,941.1
|
| 62 |
Rio Arriba County, New Mexico
|
5,860.8
|
| 63 |
Box Elder County, Utah
|
5,745.6
|
| 64 |
Beaverhead County, Montana
|
5,541.6
|
| 65 |
Yuma County, Arizona
|
5,514.0
|
| 66 |
San Juan County, New Mexico
|
5,513.1
|
| 67 |
Lander County, Nevada
|
5,490.1
|
| 68 |
McKinley County, New Mexico
|
5,449.8
|
| 69 |
Pinal County, Arizona
|
5,365.6
|
| 70 |
Natrona County, Wyoming
|
5,340.4
|
| 71 |
Okanogan County, Washington
|
5,268.0
|
| 72 |
Garfield County, Utah
|
5,175.1
|
| 73 |
Phillips County, Montana
|
5,140.0
|
| 74 |
Flathead County, Montana
|
5,087.7
|
| 75 |
Douglas County, Oregon
|
5,036.1
|
| 76 |
Rosebud County, Montana
|
5,010.4
|
| 77 |
Big Horn County, Montana
|
4,995.5
|
| 78 |
Churchill County, Nevada
|
4,930.5
|
| 79 |
Valley County, Montana
|
4,925.8
|
| 80 |
Custer County, Idaho
|
4,920.9
|
| 81 |
Sublette County, Wyoming
|
4,886.5
|
| 82 |
Ketchikan Gateway Borough, Alaska
|
4,858.4
|
| 83 |
Lincoln County, New Mexico
|
4,831.1
|
| 84 |
Tulare County, California
|
4,824.2
|
| 85 |
Campbell County, Wyoming
|
4,802.7
|
| 86 |
Las Animas County, Colorado
|
4,772.7
|
| 87 |
Pecos County, Texas
|
4,763.9
|
| 88 |
Gila County, Arizona
|
4,757.9
|
| 89 |
Moffat County, Colorado
|
4,743.3
|
| 90 |
San Miguel County, New Mexico
|
4,715.8
|
| 91 |
Garfield County, Montana
|
4,675.4
|
| 92 |
Graham County, Arizona
|
4,622.6
|
| 93 |
Hudspeth County, Texas
|
4,571.0
|
| 94 |
Lemhi County, Idaho
|
4,563.4
|
| 95 |
Lane County, Oregon
|
4,553.1
|
| 96 |
Lassen County, California
|
4,541.2
|
| 97 |
Cibola County, New Mexico
|
4,539.5
|
| 98 |
Grant County, Oregon
|
4,528.5
|
| 99 |
La Paz County, Arizona
|
4,499.6
|
| 100 |
Uintah County, Utah
|
4,479.7
|