# List of the largest counties in the United States by area

This is a list of the 100 largest counties in the United States by area. The list is based upon the total area of a county, both land and water surface, reported by the United States Census Bureau during the 2000 Census. Alaska and Louisiana are not divided into counties.
A different ranking becomes apparent when comparing county areas by land area alone as opposed to total area. Some counties, such as Keweenaw and Alger Counties in Michigan, include significant amounts of water in their total area and would not appear on a list that considered land area alone. This list also includes the four counties that would be included when water area is not included.
Nine US states are smaller than San Bernardino County, California, and two states, Rhode Island and Delaware are smaller than the smallest counties on this list.

## List of largest counties

| Rank | County | State | County seat | Total area | Land area |
| 1 | San Bernardino County | California | San Bernardino | 20,105.32 sq mi (52,072.5 km$^2$) | 20,052.5 sq mi (51,936 km$^2$) |
| 2 | Coconino County | Arizona | Flagstaff | 18,661.21 sq mi (48,332.3 km$^2$) | 18,617.42 sq mi (48,218.9 km$^2$) |
| 3 | Nye County | Nevada | Tonopah | 18,158.73 sq mi (47,030.9 km$^2$) | 18,146.66 sq mi (46,999.6 km$^2$) |
| 4 | Elko County | Nevada | Elko | 17,202.94 sq mi (44,555.4 km$^2$) | 17,179.03 sq mi (44,493.5 km$^2$) |
| 5 | Mohave County | Arizona | Kingman | 13,469.71 sq mi (34,886.4 km$^2$) | 13,311.64 sq mi (34,477.0 km$^2$) |
| 6 | Apache County | Arizona | St. Johns | 11,218.42 sq mi (29,055.6 km$^2$) | 11,204.88 sq mi (29,020.5 km$^2$) |
| 7 | Lincoln County | Nevada | Pioche | 10,636.77 sq mi (27,549.1 km$^2$) | 10,633.61 sq mi (27,540.9 km$^2$) |
| 8 | Sweetwater County | Wyoming | Green River | 10,491.17 sq mi (27,172.0 km$^2$) | 10,425.3 sq mi (27,001 km$^2$) |
| 9 | Inyo County | California | Independence | 10,226.98 sq mi (26,487.8 km$^2$) | 10,203.1 sq mi (26,426 km$^2$) |
| 10 | Harney County | Oregon | Burns | 10,226.49 sq mi (26,486.5 km$^2$) | 10,134.33 sq mi (26,247.8 km$^2$) |
| 11 | Navajo County | Arizona | Holbrook | 9,959.49 sq mi (25,795.0 km$^2$) | 9,953.18 sq mi (25,778.6 km$^2$) |
| 12 | Malheur County | Oregon | Vale | 9,929.99 sq mi (25,718.6 km$^2$) | 9,887.09 sq mi (25,607.4 km$^2$) |
| 13 | Humboldt County | Nevada | Winnemucca | 9,657.87 sq mi (25,013.8 km$^2$) | 9,647.91 sq mi (24,988.0 km$^2$) |
| 14 | Fremont County | Wyoming | Lander | 9,265.8 sq mi (23,998 km$^2$) | 9,182.27 sq mi (23,782.0 km$^2$) |
| 15 | Maricopa County | Arizona | Phoenix | 9,224.27 sq mi (23,890.7 km$^2$) | 9,203.14 sq mi (23,836.0 km$^2$) |
| 16 | Pima County | Arizona | Tucson | 9,188.83 sq mi (23,799.0 km$^2$) | 9,186.27 sq mi (23,792.3 km$^2$) |
| 17 | White Pine County | Nevada | Ely | 8,896.6 sq mi (23,042 km$^2$) | 8,875.98 sq mi (22,988.7 km$^2$) |
| 18 | Idaho County | Idaho | Grangeville | 8,502.48 sq mi (22,021.3 km$^2$) | 8,484.88 sq mi (21,975.7 km$^2$) |
| 19 | Lake County | Oregon | Lakeview | 8,358.47 sq mi (21,648.3 km$^2$) | 8,135.75 sq mi (21,071.5 km$^2$) |
| 20 | Kern County | California | Bakersfield | 8,161.42 sq mi (21,138.0 km$^2$) | 8,140.96 sq mi (21,085.0 km$^2$) |
| 21 | Yavapai County | Arizona | Prescott | 8,127.78 sq mi (21,050.9 km$^2$) | 8,123.3 sq mi (21,039 km$^2$) |
| 22 | Clark County | Nevada | Las Vegas | 8,090.66 sq mi (20,954.7 km$^2$) | 7,910.34 sq mi (20,487.7 km$^2$) |
| 23 | Carbon County | Wyoming | Rawlins | 7,964.03 sq mi (20,626.7 km$^2$) | 7,896.14 sq mi (20,450.9 km$^2$) |
| 24 | San Juan County | Utah | Monticello | 7,933.09 sq mi (20,546.6 km$^2$) | 7,820.18 sq mi (20,254.2 km$^2$) |
| 25 | Owyhee County | Idaho | Murphy | 7,696.71 sq mi (19,934.4 km$^2$) | 7,677.98 sq mi (19,885.9 km$^2$) |
| 26 | Riverside County | California | Riverside | 7,303.13 sq mi (18,915.0 km$^2$) | 7,207.37 sq mi (18,667.0 km$^2$) |
| 27 | Tooele County | Utah | Tooele | 7,287.12 sq mi (18,873.6 km$^2$) | 6,930.35 sq mi (17,949.5 km$^2$) |
| 28 | Park County | Wyoming | Cody | 6,968.51 sq mi (18,048.4 km$^2$) | 6,942.39 sq mi (17,980.7 km$^2$) |
| 29 | Catron County | New Mexico | Reserve | 6,929.03 sq mi (17,946.1 km$^2$) | 6,927.81 sq mi (17,942.9 km$^2$) |
| 30 | St. Louis County | Minnesota | Duluth | 6,859.91 sq mi (17,767.1 km$^2$) | 6,225.16 sq mi (16,123.1 km$^2$) |
| 31 | Aroostook County | Maine | Houlton | 6,828.79 sq mi (17,686.5 km$^2$) | 6,671.54 sq mi (17,279.2 km$^2$) |
| 32 | Millard County | Utah | Fillmore | 6,828.01 sq mi (17,684.5 km$^2$) | 6,589.13 sq mi (17,065.8 km$^2$) |
| 33 | Box Elder County | Utah | Brigham City | 6,729.03 sq mi (17,428.1 km$^2$) | 5,723.34 sq mi (14,823.4 km$^2$) |
| 34 | Socorro County | New Mexico | Socorro | 6,648.71 sq mi (17,220.1 km$^2$) | 6,646.4 sq mi (17,214 km$^2$) |
| 35 | Otero County | New Mexico | Alamogordo | 6,627.43 sq mi (17,165.0 km$^2$) | 6,626.5 sq mi (17,163 km$^2$) |
| 36 | Washoe County | Nevada | Reno | 6,551.32 sq mi (16,967.8 km$^2$) | 6,342.27 sq mi (16,426.4 km$^2$) |
| 37 | Siskiyou County | California | Yreka | 6,347.46 sq mi (16,439.8 km$^2$) | 6,286.78 sq mi (16,282.7 km$^2$) |
| 38 | Cochise County | Arizona | Bisbee | 6,218.77 sq mi (16,106.5 km$^2$) | 6,169.45 sq mi (15,978.8 km$^2$) |
| 39 | Brewster County | Texas | Alpine | 6,192.78 sq mi (16,039.2 km$^2$) | 6,192.61 sq mi (16,038.8 km$^2$) |
| 40 | Klamath County | Oregon | Klamath Falls | 6,135.75 sq mi (15,891.5 km$^2$) | 5,944.19 sq mi (15,395.4 km$^2$) |
| 41 | Chaves County | New Mexico | Roswell | 6,075.07 sq mi (15,734.4 km$^2$) | 6,070.86 sq mi (15,723.5 km$^2$) |
| 42 | Pershing County | Nevada | Lovelock | 6,067.55 sq mi (15,714.9 km$^2$) | 6,036.56 sq mi (15,634.6 km$^2$) |
| 43 | Fresno County | California | Fresno | 6,017.42 sq mi (15,585.0 km$^2$) | 5,962.73 sq mi (15,443.4 km$^2$) |
| 44 | Cherry County | Nebraska | Valentine | 6,009.54 sq mi (15,564.6 km$^2$) | 5,960.52 sq mi (15,437.7 km$^2$) |
| 45 | Keweenaw County | Michigan | Eagle River | 5,965.96 sq mi (15,451.8 km$^2$) | 540.97 sq mi (1,401.1 km$^2$) |
| 46 | Rio Arriba County | New Mexico | Tierra Amarilla | 5,896.1 sq mi (15,271 km$^2$) | 5,857.63 sq mi (15,171.2 km$^2$) |
| 47 | Beaverhead County | Montana | Dillon | 5,572.04 sq mi (14,431.5 km$^2$) | 5,542.31 sq mi (14,354.5 km$^2$) |
| 48 | San Juan County | New Mexico | Aztec | 5,538.36 sq mi (14,344.3 km$^2$) | 5,514.02 sq mi (14,281.2 km$^2$) |
| 49 | Lander County | Nevada | Battle Mountain | 5,519.47 sq mi (14,295.4 km$^2$) | 5,493.63 sq mi (14,228.4 km$^2$) |
| 50 | Yuma County | Arizona | Yuma | 5,518.96 sq mi (14,294.0 km$^2$) | 5,514.09 sq mi (14,281.4 km$^2$) |
| 51 | McKinley County | New Mexico | Gallup | 5,455.22 sq mi (14,129.0 km$^2$) | 5,448.72 sq mi (14,112.1 km$^2$) |
| 52 | Natrona County | Wyoming | Casper | 5,375.72 sq mi (13,923.1 km$^2$) | 5,339.88 sq mi (13,830.2 km$^2$) |
| 53 | Pinal County | Arizona | Florence | 5,374.09 sq mi (13,918.8 km$^2$) | 5,369.59 sq mi (13,907.2 km$^2$) |
| 54 | Okanogan County | Washington | Okanogan | 5,315.16 sq mi (13,766.2 km$^2$) | 5,268.07 sq mi (13,644.2 km$^2$) |
| 55 | Flathead County | Montana | Kalispell | 5,256.45 sq mi (13,614.1 km$^2$) | 5,098.34 sq mi (13,204.6 km$^2$) |
| 56 | Phillips County | Montana | Malta | 5,212.17 sq mi (13,499.5 km$^2$) | 5,139.57 sq mi (13,311.4 km$^2$) |
| 57 | Garfield County | Utah | Panguitch | 5,208.2 sq mi (13,489 km$^2$) | 5,174.22 sq mi (13,401.2 km$^2$) |
| 58 | Douglas County | Oregon | Roseburg | 5,133.83 sq mi (13,296.6 km$^2$) | 5,036.62 sq mi (13,044.8 km$^2$) |
| 59 | Hawaii County | Hawaii | Hilo | 5,086.7 sq mi (13,174 km$^2$) | 4,028.02 sq mi (10,432.5 km$^2$) |
| 60 | Valley County | Montana | Glasgow | 5,061.98 sq mi (13,110.5 km$^2$) | 4,921 sq mi (12,750 km$^2$) |
| 61 | Alger County | Michigan | Munising | 5,049.08 sq mi (13,077.1 km$^2$) | 917.83 sq mi (2,377.2 km$^2$) |
| 62 | Rosebud County | Montana | Forsyth | 5,026.94 sq mi (13,019.7 km$^2$) | 5,012.37 sq mi (12,982.0 km$^2$) |
| 63 | Churchill County | Nevada | Fallon | 5,023.38 sq mi (13,010.5 km$^2$) | 4,929.08 sq mi (12,766.3 km$^2$) |
| 64 | Big Horn County | Montana | Hardin | 5,014.65 sq mi (12,987.9 km$^2$) | 4,994.81 sq mi (12,936.5 km$^2$) |
| 65 | Custer County | Idaho | Challis | 4,936.79 sq mi (12,786.2 km$^2$) | 4,925.45 sq mi (12,756.9 km$^2$) |
| 66 | Sublette County | Wyoming | Pinedale | 4,935.66 sq mi (12,783.3 km$^2$) | 4,882.57 sq mi (12,645.8 km$^2$) |
| 67 | Garfield County | Montana | Jordan | 4,847.54 sq mi (12,555.1 km$^2$) | 4,668.06 sq mi (12,090.2 km$^2$) |
| 68 | Tulare County | California | Visalia | 4,839.09 sq mi (12,533.2 km$^2$) | 4,823.97 sq mi (12,494.0 km$^2$) |
| 69 | Lincoln County | New Mexico | Carrizozo | 4,831.25 sq mi (12,512.9 km$^2$) | 4,830.97 sq mi (12,512.2 km$^2$) |
| 70 | Campbell County | Wyoming | Gillette | 4,807.25 sq mi (12,450.7 km$^2$) | 4,803.13 sq mi (12,440.0 km$^2$) |
| 71 | Gila County | Arizona | Globe | 4,795.74 sq mi (12,420.9 km$^2$) | 4,767.7 sq mi (12,348 km$^2$) |
| 72 | Las Animas County | Colorado | Trinidad | 4,775.42 sq mi (12,368.3 km$^2$) | 4,772.63 sq mi (12,361.1 km$^2$) |
| 73 | Pecos County | Texas | Fort Stockton | 4,764.73 sq mi (12,340.6 km$^2$) | 4,763.66 sq mi (12,337.8 km$^2$) |
| 74 | Los Angeles County | California | Los Angeles | 4,752.32 sq mi (12,308.5 km$^2$) | 4,060.87 sq mi (10,517.6 km$^2$) |
| 75 | Moffat County | Colorado | Craig | 4,750.94 sq mi (12,304.9 km$^2$) | 4,742.25 sq mi (12,282.4 km$^2$) |
| 76 | San Miguel County | New Mexico | Las Vegas | 4,735.63 sq mi (12,265.2 km$^2$) | 4,717.04 sq mi (12,217.1 km$^2$) |
| 77 | Lane County | Oregon | Eugene | 4,721.79 sq mi (12,229.4 km$^2$) | 4,554 sq mi (11,790 km$^2$) |
| 78 | Lassen County | California | Susanville | 4,720.37 sq mi (12,225.7 km$^2$) | 4,557.27 sq mi (11,803.3 km$^2$) |
| 79 | Graham County | Arizona | Safford | 4,641.14 sq mi (12,020.5 km$^2$) | 4,629.32 sq mi (11,989.9 km$^2$) |
| 80 | Hudspeth County | Texas | Sierra Blanca | 4,571.93 sq mi (11,841.2 km$^2$) | 4,571 sq mi (11,840 km$^2$) |
| 81 | Lemhi County | Idaho | Salmon | 4,569.5 sq mi (11,835 km$^2$) | 4,564.16 sq mi (11,821.1 km$^2$) |
| 82 | Cibola County | New Mexico | Grants | 4,541.71 sq mi (11,763.0 km$^2$) | 4,539.21 sq mi (11,756.5 km$^2$) |
| 83 | Grant County | Oregon | Canyon City | 4,529.32 sq mi (11,730.9 km$^2$) | 4,528.6 sq mi (11,729 km$^2$) |
| 84 | San Diego County | California | San Diego | 4,525.52 sq mi (11,721.0 km$^2$) | 4,199.89 sq mi (10,877.7 km$^2$) |
| 85 | La Paz County | Arizona | Parker | 4,513.36 sq mi (11,689.5 km$^2$) | 4,499.95 sq mi (11,654.8 km$^2$) |
| 86 | Uintah County | Utah | Vernal | 4,498.98 sq mi (11,652.3 km$^2$) | 4,477.07 sq mi (11,595.6 km$^2$) |
| 87 | Imperial County | California | El Centro | 4,481.73 sq mi (11,607.6 km$^2$) | 4,174.73 sq mi (10,812.5 km$^2$) |
| 88 | Emery County | Utah | Castle Dale | 4,461.54 sq mi (11,555.3 km$^2$) | 4,451.85 sq mi (11,530.2 km$^2$) |
| 89 | Lea County | New Mexico | Lovington | 4,394.02 sq mi (11,380.5 km$^2$) | 4,392.96 sq mi (11,377.7 km$^2$) |
| 90 | Piscataquis County | Maine | Dover-Foxcroft | 4,377.36 sq mi (11,337.3 km$^2$) | 3,966.22 sq mi (10,272.5 km$^2$) |
| 91 | Fergus County | Montana | Lewistown | 4,350.36 sq mi (11,267.4 km$^2$) | 4,339.17 sq mi (11,238.4 km$^2$) |
| 92 | Yakima County | Washington | Yakima | 4,311.61 sq mi (11,167.0 km$^2$) | 4,296.23 sq mi (11,127.2 km$^2$) |
| 93 | Albany County | Wyoming | Laramie | 4,308.79 sq mi (11,159.7 km$^2$) | 4,272.75 sq mi (11,066.4 km$^2$) |
| 94 | Converse County | Wyoming | Douglas | 4,265.1 sq mi (11,047 km$^2$) | 4,254.72 sq mi (11,019.7 km$^2$) |
| 95 | Blaine County | Montana | Chinook | 4,238.92 sq mi (10,978.8 km$^2$) | 4,226.18 sq mi (10,945.8 km$^2$) |
| 96 | Sierra County | New Mexico | Truth or Consequences | 4,236.3 sq mi (10,972 km$^2$) | 4,180.23 sq mi (10,826.7 km$^2$) |
| 97 | Teton County | Wyoming | Jackson | 4,221.8 sq mi (10,934 km$^2$) | 4,007.76 sq mi (10,380.1 km$^2$) |
| 98 | Modoc County | California | Alturas | 4,203.37 sq mi (10,886.7 km$^2$) | 3,944.1 sq mi (10,215 km$^2$) |
| 99 | Eddy County | New Mexico | Carlsbad | 4,197.57 sq mi (10,871.7 km$^2$) | 4,182.02 sq mi (10,831.4 km$^2$) |
| 100 | Eureka County | Nevada | Eureka | 4,179.96 sq mi (10,826.0 km$^2$) | 4,175.68 sq mi (10,815.0 km$^2$) |
| 101 (94) | Johnson County | Wyoming | Buffalo | 4,174.71 sq mi (10,812.4 km$^2$) | 4,166.28 sq mi (10,790.6 km$^2$) |
| 102 (100) | Kane County | Utah | Kanab | 4,108.42 sq mi (10,640.8 km$^2$) | 3,991.96 sq mi (10,339.1 km$^2$) |
| 104 (95) | Lincoln County | Wyoming | Kemmerer | 4,089.01 sq mi (10,590.5 km$^2$) | 4,069.09 sq mi (10,538.9 km$^2$) |
| 106 (99) | Orange County | California | Santa Ana | 4,021.56 sq mi (10,415.8 km$^2$) | 3,992.45 sq mi (10,340.4 km$^2$) |