List of the largest counties in the United States by area
From Wikipedia, the free encyclopedia
This is a list of the 103 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.[1]
List of largest counties
| Rank | County | State | County seat | Total area | Land area |
|---|---|---|---|---|---|
| 1 | San Bernardino County | California | San Bernardino | 20,160 sq mi (52,200 km2) | 20,064 sq mi (51,970 km2) |
| 2 | Coconino County | Arizona | Flagstaff | 18,661.21 sq mi (48,332.3 km2) | 18,617.42 sq mi (48,218.9 km2) |
| 3 | Nye County | Nevada | Tonopah | 18,158.73 sq mi (47,030.9 km2) | 18,146.66 sq mi (46,999.6 km2) |
| 4 | Elko County | Nevada | Elko | 17,202.94 sq mi (44,555.4 km2) | 17,179.03 sq mi (44,493.5 km2) |
| 5 | Mohave County | Arizona | Kingman | 13,469.71 sq mi (34,886.4 km2) | 13,311.64 sq mi (34,477.0 km2) |
| 6 | Apache County | Arizona | St. Johns | 11,218.42 sq mi (29,055.6 km2) | 11,204.88 sq mi (29,020.5 km2) |
| 7 | Lincoln County | Nevada | Pioche | 10,636.77 sq mi (27,549.1 km2) | 10,633.61 sq mi (27,540.9 km2) |
| 8 | Sweetwater County | Wyoming | Green River | 10,491.17 sq mi (27,172.0 km2) | 10,425.3 sq mi (27,001 km2) |
| 9 | Inyo County | California | Independence | 10,226.98 sq mi (26,487.8 km2) | 10,203.1 sq mi (26,426 km2) |
| 10 | Harney County | Oregon | Burns | 10,226.49 sq mi (26,486.5 km2) | 10,134.33 sq mi (26,247.8 km2) |
| 11 | Navajo County | Arizona | Holbrook | 9,959.49 sq mi (25,795.0 km2) | 9,953.18 sq mi (25,778.6 km2) |
| 12 | Malheur County | Oregon | Vale | 9,929.99 sq mi (25,718.6 km2) | 9,887.09 sq mi (25,607.4 km2) |
| 13 | Humboldt County | Nevada | Winnemucca | 9,657.87 sq mi (25,013.8 km2) | 9,647.91 sq mi (24,988.0 km2) |
| 14 | Fremont County | Wyoming | Lander | 9,265.8 sq mi (23,998 km2) | 9,182.27 sq mi (23,782.0 km2) |
| 15 | Maricopa County | Arizona | Phoenix | 9,224.27 sq mi (23,890.7 km2) | 9,203.14 sq mi (23,836.0 km2) |
| 16 | Pima County | Arizona | Tucson | 9,188.83 sq mi (23,799.0 km2) | 9,186.27 sq mi (23,792.3 km2) |
| 17 | White Pine County | Nevada | Ely | 8,896.6 sq mi (23,042 km2) | 8,875.98 sq mi (22,988.7 km2) |
| 18 | Idaho County | Idaho | Grangeville | 8,502.48 sq mi (22,021.3 km2) | 8,484.88 sq mi (21,975.7 km2) |
| 19 | Lake County | Oregon | Lakeview | 8,358.47 sq mi (21,648.3 km2) | 8,135.75 sq mi (21,071.5 km2) |
| 20 | Kern County | California | Bakersfield | 8,161.42 sq mi (21,138.0 km2) | 8,140.96 sq mi (21,085.0 km2) |
| 21 | Yavapai County | Arizona | Prescott | 8,127.78 sq mi (21,050.9 km2) | 8,123.3 sq mi (21,039 km2) |
| 22 | Clark County | Nevada | Las Vegas | 8,090.66 sq mi (20,954.7 km2) | 7,910.34 sq mi (20,487.7 km2) |
| 23 | Carbon County | Wyoming | Rawlins | 7,964.03 sq mi (20,626.7 km2) | 7,896.14 sq mi (20,450.9 km2) |
| 24 | San Juan County | Utah | Monticello | 7,933.09 sq mi (20,546.6 km2) | 7,820.18 sq mi (20,254.2 km2) |
| 25 | Owyhee County | Idaho | Murphy | 7,696.71 sq mi (19,934.4 km2) | 7,677.98 sq mi (19,885.9 km2) |
| 26 | Riverside County | California | Riverside | 7,303.13 sq mi (18,915.0 km2) | 7,207.37 sq mi (18,667.0 km2) |
| 27 | Tooele County | Utah | Tooele | 7,287.12 sq mi (18,873.6 km2) | 6,930.35 sq mi (17,949.5 km2) |
| 28 | Park County | Wyoming | Cody | 6,968.51 sq mi (18,048.4 km2) | 6,942.39 sq mi (17,980.7 km2) |
| 29 | Catron County | New Mexico | Reserve | 6,929.03 sq mi (17,946.1 km2) | 6,927.81 sq mi (17,942.9 km2) |
| 30 | St. Louis County | Minnesota | Duluth | 6,859.91 sq mi (17,767.1 km2) | 6,225.16 sq mi (16,123.1 km2) |
| 31 | Aroostook County | Maine | Houlton | 6,828.79 sq mi (17,686.5 km2) | 6,671.54 sq mi (17,279.2 km2) |
| 32 | Millard County | Utah | Fillmore | 6,828.01 sq mi (17,684.5 km2) | 6,589.13 sq mi (17,065.8 km2) |
| 33 | Box Elder County | Utah | Brigham City | 6,729.03 sq mi (17,428.1 km2) | 5,723.34 sq mi (14,823.4 km2) |
| 34 | Socorro County | New Mexico | Socorro | 6,648.71 sq mi (17,220.1 km2) | 6,646.4 sq mi (17,214 km2) |
| 35 | Otero County | New Mexico | Alamogordo | 6,627.43 sq mi (17,165.0 km2) | 6,626.5 sq mi (17,163 km2) |
| 36 | Washoe County | Nevada | Reno | 6,551.32 sq mi (16,967.8 km2) | 6,342.27 sq mi (16,426.4 km2) |
| 37 | Siskiyou County | California | Yreka | 6,347.46 sq mi (16,439.8 km2) | 6,286.78 sq mi (16,282.7 km2) |
| 38 | Cochise County | Arizona | Bisbee | 6,218.77 sq mi (16,106.5 km2) | 6,169.45 sq mi (15,978.8 km2) |
| 39 | Brewster County | Texas | Alpine | 6,192.78 sq mi (16,039.2 km2) | 6,192.61 sq mi (16,038.8 km2) |
| 40 | Klamath County | Oregon | Klamath Falls | 6,135.75 sq mi (15,891.5 km2) | 5,944.19 sq mi (15,395.4 km2) |
| 41 | Chaves County | New Mexico | Roswell | 6,075.07 sq mi (15,734.4 km2) | 6,070.86 sq mi (15,723.5 km2) |
| 42 | Pershing County | Nevada | Lovelock | 6,067.55 sq mi (15,714.9 km2) | 6,036.56 sq mi (15,634.6 km2) |
| 43 | Cherry County | Nebraska | Valentine | 6,009.54 sq mi (15,564.6 km2) | 5,960.52 sq mi (15,437.7 km2) |
| 44 | Keweenaw County | Michigan | Eagle River | 5,965.96 sq mi (15,451.8 km2) | 540.97 sq mi (1,401.1 km2) |
| 45 | Rio Arriba County | New Mexico | Tierra Amarilla | 5,896.1 sq mi (15,271 km2) | 5,857.63 sq mi (15,171.2 km2) |
| 46 | Beaverhead County | Montana | Dillon | 5,572.04 sq mi (14,431.5 km2) | 5,542.31 sq mi (14,354.5 km2) |
| 47 | San Juan County | New Mexico | Aztec | 5,538.36 sq mi (14,344.3 km2) | 5,514.02 sq mi (14,281.2 km2) |
| 48 | Lander County | Nevada | Battle Mountain | 5,519.47 sq mi (14,295.4 km2) | 5,493.63 sq mi (14,228.4 km2) |
| 49 | Yuma County | Arizona | Yuma | 5,518.96 sq mi (14,294.0 km2) | 5,514.09 sq mi (14,281.4 km2) |
| 50 | McKinley County | New Mexico | Gallup | 5,455.22 sq mi (14,129.0 km2) | 5,448.72 sq mi (14,112.1 km2) |
| 51 | Natrona County | Wyoming | Casper | 5,375.72 sq mi (13,923.1 km2) | 5,339.88 sq mi (13,830.2 km2) |
| 52 | Pinal County | Arizona | Florence | 5,374.09 sq mi (13,918.8 km2) | 5,369.59 sq mi (13,907.2 km2) |
| 53 | Okanogan County | Washington | Okanogan | 5,315.16 sq mi (13,766.2 km2) | 5,268.07 sq mi (13,644.2 km2) |
| 54 | Flathead County | Montana | Kalispell | 5,256.45 sq mi (13,614.1 km2) | 5,098.34 sq mi (13,204.6 km2) |
| 55 | Phillips County | Montana | Malta | 5,212.17 sq mi (13,499.5 km2) | 5,139.57 sq mi (13,311.4 km2) |
| 56 | Garfield County | Utah | Panguitch | 5,208.2 sq mi (13,489 km2) | 5,174.22 sq mi (13,401.2 km2) |
| 57 | Douglas County | Oregon | Roseburg | 5,133.83 sq mi (13,296.6 km2) | 5,036.62 sq mi (13,044.8 km2) |
| 58 | Hawaii County | Hawaii | Hilo | 5,086.7 sq mi (13,174 km2) | 4,028.02 sq mi (10,432.5 km2) |
| 59 | Valley County | Montana | Glasgow | 5,061.98 sq mi (13,110.5 km2) | 4,921 sq mi (12,750 km2) |
| 60 | Alger County | Michigan | Munising | 5,049.08 sq mi (13,077.1 km2) | 917.83 sq mi (2,377.2 km2) |
| 61 | Rosebud County | Montana | Forsyth | 5,026.94 sq mi (13,019.7 km2) | 5,012.37 sq mi (12,982.0 km2) |
| 62 | Churchill County | Nevada | Fallon | 5,023.38 sq mi (13,010.5 km2) | 4,929.08 sq mi (12,766.3 km2) |
| 63 | Big Horn County | Montana | Hardin | 5,014.65 sq mi (12,987.9 km2) | 4,994.81 sq mi (12,936.5 km2) |
| 64 | Custer County | Idaho | Challis | 4,936.79 sq mi (12,786.2 km2) | 4,925.45 sq mi (12,756.9 km2) |
| 65 | Sublette County | Wyoming | Pinedale | 4,935.66 sq mi (12,783.3 km2) | 4,882.57 sq mi (12,645.8 km2) |
| 66 | Garfield County | Montana | Jordan | 4,847.54 sq mi (12,555.1 km2) | 4,668.06 sq mi (12,090.2 km2) |
| 67 | Tulare County | California | Visalia | 4,839.09 sq mi (12,533.2 km2) | 4,823.97 sq mi (12,494.0 km2) |
| 68 | Lincoln County | New Mexico | Carrizozo | 4,831.25 sq mi (12,512.9 km2) | 4,830.97 sq mi (12,512.2 km2) |
| 69 | Campbell County | Wyoming | Gillette | 4,807.25 sq mi (12,450.7 km2) | 4,803.13 sq mi (12,440.0 km2) |
| 70 | Gila County | Arizona | Globe | 4,795.74 sq mi (12,420.9 km2) | 4,767.7 sq mi (12,348 km2) |
| 71 | Las Animas County | Colorado | Trinidad | 4,775.42 sq mi (12,368.3 km2) | 4,772.63 sq mi (12,361.1 km2) |
| 72 | Pecos County | Texas | Fort Stockton | 4,764.73 sq mi (12,340.6 km2) | 4,763.66 sq mi (12,337.8 km2) |
| 73 | Los Angeles County | California | Los Angeles | 4,752.32 sq mi (12,308.5 km2) | 4,060.87 sq mi (10,517.6 km2) |
| 74 | Moffat County | Colorado | Craig | 4,750.94 sq mi (12,304.9 km2) | 4,742.25 sq mi (12,282.4 km2) |
| 75 | San Miguel County | New Mexico | Las Vegas | 4,735.63 sq mi (12,265.2 km2) | 4,717.04 sq mi (12,217.1 km2) |
| 76 | Lane County | Oregon | Eugene | 4,721.79 sq mi (12,229.4 km2) | 4,554 sq mi (11,790 km2) |
| 77 | Lassen County | California | Susanville | 4,720.37 sq mi (12,225.7 km2) | 4,557.27 sq mi (11,803.3 km2) |
| 78 | Graham County | Arizona | Safford | 4,641.14 sq mi (12,020.5 km2) | 4,629.32 sq mi (11,989.9 km2) |
| 79 | Hudspeth County | Texas | Sierra Blanca | 4,571.93 sq mi (11,841.2 km2) | 4,571 sq mi (11,840 km2) |
| 80 | Lemhi County | Idaho | Salmon | 4,569.5 sq mi (11,835 km2) | 4,564.16 sq mi (11,821.1 km2) |
| 81 | Cibola County | New Mexico | Grants | 4,541.71 sq mi (11,763.0 km2) | 4,539.21 sq mi (11,756.5 km2) |
| 82 | Grant County | Oregon | Canyon City | 4,529.32 sq mi (11,730.9 km2) | 4,528.6 sq mi (11,729 km2) |
| 83 | San Diego County | California | San Diego | 4,525.52 sq mi (11,721.0 km2) | 4,199.89 sq mi (10,877.7 km2) |
| 84 | La Paz County | Arizona | Parker | 4,513.36 sq mi (11,689.5 km2) | 4,499.95 sq mi (11,654.8 km2) |
| 85 | Uintah County | Utah | Vernal | 4,498.98 sq mi (11,652.3 km2) | 4,477.07 sq mi (11,595.6 km2) |
| 86 | Imperial County | California | El Centro | 4,481.73 sq mi (11,607.6 km2) | 4,174.73 sq mi (10,812.5 km2) |
| 87 | Emery County | Utah | Castle Dale | 4,461.54 sq mi (11,555.3 km2) | 4,451.85 sq mi (11,530.2 km2) |
| 88 | Lea County | New Mexico | Lovington | 4,394.02 sq mi (11,380.5 km2) | 4,392.96 sq mi (11,377.7 km2) |
| 89 | Piscataquis County | Maine | Dover-Foxcroft | 4,377.36 sq mi (11,337.3 km2) | 3,966.22 sq mi (10,272.5 km2) |
| 90 | Fergus County | Montana | Lewistown | 4,350.36 sq mi (11,267.4 km2) | 4,339.17 sq mi (11,238.4 km2) |
| 91 | Yakima County | Washington | Yakima | 4,311.61 sq mi (11,167.0 km2) | 4,296.23 sq mi (11,127.2 km2) |
| 92 | Albany County | Wyoming | Laramie | 4,308.79 sq mi (11,159.7 km2) | 4,272.75 sq mi (11,066.4 km2) |
| 93 | Converse County | Wyoming | Douglas | 4,265.1 sq mi (11,047 km2) | 4,254.72 sq mi (11,019.7 km2) |
| 94 | Blaine County | Montana | Chinook | 4,238.92 sq mi (10,978.8 km2) | 4,226.18 sq mi (10,945.8 km2) |
| 95 | Sierra County | New Mexico | Truth or Consequences | 4,236.3 sq mi (10,972 km2) | 4,180.23 sq mi (10,826.7 km2) |
| 96 | Teton County | Wyoming | Jackson | 4,221.8 sq mi (10,934 km2) | 4,007.76 sq mi (10,380.1 km2) |
| 97 | Modoc County | California | Alturas | 4,203.37 sq mi (10,886.7 km2) | 3,944.1 sq mi (10,215 km2) |
| 98 | Eddy County | New Mexico | Carlsbad | 4,197.57 sq mi (10,871.7 km2) | 4,182.02 sq mi (10,831.4 km2) |
| 99 | Eureka County | Nevada | Eureka | 4,179.96 sq mi (10,826.0 km2) | 4,175.68 sq mi (10,815.0 km2) |
| 100 | Johnson County | Wyoming | Buffalo | 4,174.71 sq mi (10,812.4 km2) | 4,166.28 sq mi (10,790.6 km2) |
| 101 | Kane County | Utah | Kanab | 4,108.42 sq mi (10,640.8 km2) | 3,991.96 sq mi (10,339.1 km2) |
| 102 | Lincoln County | Wyoming | Kemmerer | 4,089.01 sq mi (10,590.5 km2) | 4,069.09 sq mi (10,538.9 km2) |
| 103 | Weld County | Colorado | Greeley | 4,021.56 sq mi (10,415.8 km2) | 3,992.45 sq mi (10,340.4 km2) |
Notes
Alaskan boroughs and census areas
Unlike most states, Alaska is divided into boroughs and census areas that serve as county-equivalents for the Census Bureau. If included with the remainder of the counties and county-equivalent areas in the United States, Alaska's boroughs and census areas would occupy the largest 11. Below is a list of these boroughs and census areas that would rank in the top 100 if included in the above list.
The Unorganized Borough, in which all of the census areas are located, is not considered a county-equivalent area and is not included in this list. With an area of 323,440 sq mi (837,700 km2), it would easily top the list, outranking every state in the country (except Alaska).
The rankings in the below list reflect the rank each borough or census area would have if included with all counties and county-equivalent areas in the United States (up to #11).
| Rank | Borough/Census Area | Total area | Land area |
|---|---|---|---|
| 1 | Yukon-Koyukuk Census Area | 147,842.51 sq mi (382,910.3 km2) | 145,899.69 sq mi (377,878.5 km2) |
| 2 | North Slope Borough | 94,762.64 sq mi (245,434.1 km2) | 88,817.12 sq mi (230,035.3 km2) |
| 3 | Bethel Census Area | 45,508.46 sq mi (117,866.4 km2) | 40,633.31 sq mi (105,239.8 km2) |
| 4 | Northwest Arctic Borough | 40,762 sq mi (105,570 km2) | 35,898.34 sq mi (92,976.3 km2) |
| 5 | Lake and Peninsula Borough | 30,906.96 sq mi (80,048.7 km2) | 23,781.96 sq mi (61,595.0 km2) |
| 6 | Nome Census Area | 28,283.33 sq mi (73,253.5 km2) | 23,000.91 sq mi (59,572.1 km2) |
| 7 | Matanuska-Susitna Borough | 25,259.79 sq mi (65,422.6 km2) | 24,681.54 sq mi (63,924.9 km2) |
| 8 | Southeast Fairbanks Census Area | 25,061.19 sq mi (64,908.2 km2) | 24,814.86 sq mi (64,270.2 km2) |
| 9 | Kenai Peninsula Borough | 24,754.6 sq mi (64,114 km2) | 16,013.26 sq mi (41,474.2 km2) |
| 10 | Copper River Census Area | 24,692 sq mi (63,950 km2) | 24,692 sq mi (63,950 km2) |
| 11 | Dillingham Census Area | 20,928.41 sq mi (54,204.3 km2) | 18,674.78 sq mi (48,367.5 km2) |
| 12 | Kusilvak Census Area | 19,669.24 sq mi (50,943.1 km2) | 17,193.5 sq mi (44,531 km2) |
| 13 | Aleutians East Borough | 15,011.6 sq mi (38,880 km2) | 6,988.14 sq mi (18,099.2 km2) |
| 14 | Aleutians West Census Area | 14,116.51 sq mi (36,561.6 km2) | 4,396.77 sq mi (11,387.6 km2) |
| 15 | Denali Borough | 12,774.53 sq mi (33,085.9 km2) | 12,749.65 sq mi (33,021.4 km2) |
| 16 | Kodiak Island Borough | 12,023.67 sq mi (31,141.2 km2) | 6,559.85 sq mi (16,989.9 km2) |
| 17 | Hoonah-Angoon Census Area | 10,914 sq mi (28,270 km2) | 7,525 sq mi (19,490 km2) |
| 18 | Chugach Census Area | 9,530 sq mi (24,700 km2) | 9,530 sq mi (24,700 km2) |
| 19 | Yakutat City and Borough | 9,459.28 sq mi (24,499.4 km2) | 7,650.46 sq mi (19,814.6 km2) |
| 20 | Prince of Wales-Hyder Census Area | 7,683 sq mi (19,900 km2) | 3,923 sq mi (10,160 km2) |
| 21 | Fairbanks North Star Borough | 7,444.02 sq mi (19,279.9 km2) | 7,366.24 sq mi (19,078.5 km2) |
| 22 | Sitka City and Borough | 4,811.53 sq mi (12,461.8 km2) | 2,873.98 sq mi (7,443.6 km2) |
| 23 | Petersburg Borough | 3,829 sq mi (9,920 km2) | 2,921 sq mi (7,570 km2) |
| 24 | Wrangell City and Borough | 3,476.61 sq mi (9,004.4 km2) | 2,555.99 sq mi (6,620.0 km2) |
| 25 | Juneau City and Borough | 3,255 sq mi (8,430 km2) | 2,716.7 sq mi (7,036 km2) |
| 26 | Haines Borough | 2,726 sq mi (7,060 km2) | 2,319 sq mi (6,010 km2) |
| 27 | Skagway Borough | 464.3 sq mi (1,203 km2) | 452.4 sq mi (1,172 km2) |
