Largest counties by land area
All counties and county equivalents, including Alaska and Puerto Rico, ranked by land area. Alaska’s boroughs and census areas are included because they serve the same statistical level as counties.
Ranks 1–100
3,222 county equivalents · page 1 of 33
What this part of the ranking shows
This page runs from Yukon-Koyukuk Census Area, Alaska at 145,767.543 mi² of land area to Grant County, Oregon at 4,527.792 mi² of land area. The 100 entries represent 16 state-level jurisdictions. Alaska has the most entries on this page (21).
Yukon-Koyukuk Census Area ranks first at 145,767.543 mi² of land area. The gap to second-place North Slope Borough is 56,969.978 mi². Compare the first two entries for separate land and water measurements.
County-equivalent boundaries differ substantially between states. Alaska’s boroughs and census areas are directly included at this statistical level; the outside-Alaska view offers a separate comparison.
| Rank | County / equivalent | State | Land mi² | Total mi² | Water share |
|---|---|---|---|---|---|
| 1 | Yukon-Koyukuk Census Area | Alaska | 145,767.5 | 147,878.2 | 1.4% |
| 2 | North Slope Borough | Alaska | 88,797.6 | 94,827.9 | 6.4% |
| 3 | Bethel Census Area | Alaska | 40,654.9 | 45,555.6 | 10.8% |
| 4 | Northwest Arctic Borough | Alaska | 35,672.3 | 40,619.8 | 12.2% |
| 5 | Southeast Fairbanks Census Area | Alaska | 24,839.3 | 25,121.6 | 1.1% |
| 6 | Matanuska-Susitna Borough | Alaska | 24,703 | 25,267.7 | 2.2% |
| 7 | Copper River Census Area | Alaska | 24,646.1 | 25,117.4 | 1.9% |
| 8 | Lake and Peninsula Borough | Alaska | 23,896.5 | 33,810.4 | 29.3% |
| 9 | Nome Census Area | Alaska | 22,969.9 | 28,290.2 | 18.8% |
| 10 | San Bernardino County | California | 20,068.4 | 20,105.7 | 0.2% |
| 11 | Coconino County | Arizona | 18,616.4 | 18,661.4 | 0.2% |
| 12 | Dillingham Census Area | Alaska | 18,355.9 | 20,628 | 11% |
| 13 | Nye County | Nevada | 18,181.9 | 18,198.6 | 0.1% |
| 14 | Elko County | Nevada | 17,173.3 | 17,202.3 | 0.2% |
| 15 | Kusilvak Census Area | Alaska | 17,151.5 | 19,658.6 | 12.8% |
| 16 | Kenai Peninsula Borough | Alaska | 16,017.1 | 24,721.2 | 35.2% |
| 17 | Mohave County | Arizona | 13,332.1 | 13,460.8 | 1% |
| 18 | Denali Borough | Alaska | 12,641.2 | 12,666.6 | 0.2% |
| 19 | Apache County | Arizona | 11,198.4 | 11,219.2 | 0.2% |
| 20 | Lincoln County | Nevada | 10,633.4 | 10,637.2 | 0% |
| 21 | Sweetwater County | Wyoming | 10,427 | 10,491.2 | 0.6% |
| 22 | Inyo County | California | 10,197.3 | 10,227.1 | 0.3% |
| 23 | Harney County | Oregon | 10,134.5 | 10,227.7 | 0.9% |
| 24 | Navajo County | Arizona | 9,949.5 | 9,958.8 | 0.1% |
| 25 | Malheur County | Oregon | 9,887.7 | 9,929.8 | 0.4% |
| 26 | Humboldt County | Nevada | 9,640.8 | 9,657.9 | 0.2% |
| 27 | Chugach Census Area | Alaska | 9,574.5 | 15,187.9 | 37% |
| 28 | Maricopa County | Arizona | 9,202 | 9,226 | 0.3% |
| 29 | Pima County | Arizona | 9,188.7 | 9,190.7 | 0% |
| 30 | Fremont County | Wyoming | 9,183.6 | 9,265.7 | 0.9% |
| 31 | White Pine County | Nevada | 8,886.7 | 8,895.7 | 0.1% |
| 32 | Idaho County | Idaho | 8,477.5 | 8,503.6 | 0.3% |
| 33 | Lake County | Oregon | 8,138.6 | 8,358.1 | 2.6% |
| 34 | Kern County | California | 8,134.7 | 8,164.9 | 0.4% |
| 35 | Yavapai County | Arizona | 8,122.9 | 8,127.3 | 0.1% |
| 36 | Carbon County | Wyoming | 7,897.7 | 7,964 | 0.8% |
| 37 | Clark County | Nevada | 7,891.7 | 8,060.9 | 2.1% |
| 38 | San Juan County | Utah | 7,823.7 | 7,933.8 | 1.4% |
| 39 | Owyhee County | Idaho | 7,668.2 | 7,696.8 | 0.4% |
| 40 | Yakutat City and Borough | Alaska | 7,638.2 | 9,164.6 | 16.7% |
| 41 | Fairbanks North Star Borough | Alaska | 7,334.7 | 7,434.9 | 1.3% |
| 42 | Riverside County | California | 7,209 | 7,302.7 | 1.3% |
| 43 | Tooele County | Utah | 7,040.3 | 7,286 | 3.4% |
| 44 | Aleutians East Borough | Alaska | 6,985.2 | 15,016.2 | 53.5% |
| 45 | Park County | Wyoming | 6,939 | 6,965.2 | 0.4% |
| 46 | Catron County | New Mexico | 6,924.2 | 6,929.7 | 0.1% |
| 47 | Millard County | Utah | 6,785.5 | 6,836.9 | 0.8% |
| 48 | Kodiak Island Borough | Alaska | 6,689.9 | 12,152 | 44.9% |
| 49 | Aroostook County | Maine | 6,671.2 | 6,827.5 | 2.3% |
| 50 | Socorro County | New Mexico | 6,646.4 | 6,648.3 | 0% |
| 51 | Otero County | New Mexico | 6,612.6 | 6,626.8 | 0.2% |
| 52 | Hoonah-Angoon Census Area | Alaska | 6,560 | 9,585.4 | 31.6% |
| 53 | Washoe County | Nevada | 6,315.9 | 6,540.9 | 3.4% |
| 54 | Siskiyou County | California | 6,278.8 | 6,347.9 | 1.1% |
| 55 | St. Louis County | Minnesota | 6,248.1 | 6,860.6 | 8.9% |
| 56 | Cochise County | Arizona | 6,209.9 | 6,216.7 | 0.1% |
| 57 | Brewster County | Texas | 6,183.8 | 6,192.3 | 0.1% |
| 58 | Chaves County | New Mexico | 6,067.2 | 6,075.1 | 0.1% |
| 59 | Pershing County | Nevada | 6,036.6 | 6,067.5 | 0.5% |
| 60 | Cherry County | Nebraska | 5,960.1 | 6,009.6 | 0.8% |
| 61 | Fresno County | California | 5,958.6 | 6,011.3 | 0.9% |
| 62 | Klamath County | Oregon | 5,949.9 | 6,137.2 | 3.1% |
| 63 | Rio Arriba County | New Mexico | 5,860.9 | 5,896.2 | 0.6% |
| 64 | Box Elder County | Utah | 5,781.3 | 6,729.2 | 14.1% |
| 65 | Beaverhead County | Montana | 5,542.7 | 5,572.9 | 0.5% |
| 66 | Lander County | Nevada | 5,519.2 | 5,519.5 | 0% |
| 67 | San Juan County | New Mexico | 5,517.2 | 5,538.4 | 0.4% |
| 68 | Yuma County | Arizona | 5,513.8 | 5,518.9 | 0.1% |
| 69 | McKinley County | New Mexico | 5,451.1 | 5,456 | 0.1% |
| 70 | Pinal County | Arizona | 5,366.7 | 5,374.7 | 0.1% |
| 71 | Natrona County | Wyoming | 5,340.5 | 5,375.7 | 0.7% |
| 72 | Prince of Wales-Hyder Census Area | Alaska | 5,268.2 | 10,914.9 | 51.7% |
| 73 | Okanogan County | Washington | 5,266.2 | 5,312.7 | 0.9% |
| 74 | Garfield County | Utah | 5,179.6 | 5,208.9 | 0.6% |
| 75 | Phillips County | Montana | 5,140.4 | 5,212 | 1.4% |
| 76 | Flathead County | Montana | 5,087.3 | 5,256 | 3.2% |
| 77 | Douglas County | Oregon | 5,035.8 | 5,133 | 1.9% |
| 78 | Rosebud County | Montana | 5,008.1 | 5,025.2 | 0.3% |
| 79 | Big Horn County | Montana | 4,997.8 | 5,016.1 | 0.4% |
| 80 | Churchill County | Nevada | 4,950.2 | 5,023.8 | 1.5% |
| 81 | Valley County | Montana | 4,926.1 | 5,061.8 | 2.7% |
| 82 | Custer County | Idaho | 4,922.2 | 4,938.6 | 0.3% |
| 83 | Sublette County | Wyoming | 4,886.5 | 4,935.7 | 1% |
| 84 | Ketchikan Gateway Borough | Alaska | 4,857.1 | 6,677.6 | 27.3% |
| 85 | Lincoln County | New Mexico | 4,831.1 | 4,831.3 | 0% |
| 86 | Tulare County | California | 4,823.9 | 4,838.3 | 0.3% |
| 87 | Campbell County | Wyoming | 4,802.1 | 4,806.3 | 0.1% |
| 88 | Las Animas County | Colorado | 4,772.9 | 4,775.6 | 0.1% |
| 89 | Pecos County | Texas | 4,763.8 | 4,764.8 | 0% |
| 90 | Gila County | Arizona | 4,757.6 | 4,794.8 | 0.8% |
| 91 | Moffat County | Colorado | 4,743.3 | 4,750.9 | 0.2% |
| 92 | San Miguel County | New Mexico | 4,721.5 | 4,741.4 | 0.4% |
| 93 | Garfield County | Montana | 4,676.6 | 4,849.1 | 3.6% |
| 94 | Graham County | Arizona | 4,621.9 | 4,640.2 | 0.4% |
| 95 | Hudspeth County | Texas | 4,570.5 | 4,571.3 | 0% |
| 96 | Lemhi County | Idaho | 4,563.7 | 4,569.1 | 0.1% |
| 97 | Lane County | Oregon | 4,554.1 | 4,722.5 | 3.6% |
| 98 | Lassen County | California | 4,541.4 | 4,720.1 | 3.8% |
| 99 | Cibola County | New Mexico | 4,540 | 4,542.1 | 0% |
| 100 | Grant County | Oregon | 4,527.8 | 4,528.5 | 0% |
Read the differences behind ranks 1–100
The median land area among these 100 entries is 6,629.475 mi². The first and last entries span 141,239.751 square miles. This median describes the entries on this page, not the full national dataset. Pagination is a browsing boundary, not a distinct geographic region.
A difference of one position means only that two entries are adjacent in this ordering. Their actual size difference can be tiny or substantial. Compare the measurements as well as the rank, and use the original square-meter fields when rounded labels appear equal.
Where the entries on this page are located
- Alaska21 entries · 21% of this page
- Arizona12 entries · 12% of this page
- Nevada10 entries · 10% of this page
- New Mexico10 entries · 10% of this page
- California8 entries · 8% of this page
- Montana7 entries · 7% of this page
The remaining 10 jurisdictions contribute 32 entries. The list above shows the six most represented, with alphabetical ordering when counts tie.
These counts describe representation in this slice of the ranking. They do not measure a state’s share of national land or population. Compare the first and last county equivalents on this page to inspect land, water, and total area separately.
Read the geographic explanation behind this ranking, or return to the ranking overview for the national distribution and guidance on selecting a measurement.
Land rankings use original ALAND square meters; total-area rankings use ALAND + AWATER. Exact ties use ascending GEOID. Displayed square-mile values are rounded. Read the methodology.