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Coconino County, Arizona has an area of 18,661 sq. miles.
Maricopa County, Arizona, USA - 9,224 square miles.
Arizona is 113,998 sq miles.Arizona has a total area of 113,998 square miles.
Apache County 11,218 sq mi (29,054 km2)Cochise County 6,219 sq mi (16,107 km2)Coconino County 18,661 sq mi (48,332 km2)Gila County 4,796 sq mi (12,422 km2)Graham County 4,641 sq mi (12,020 km2)Greenlee County 1,848 sq mi (4,786 km2)La Paz County 4,513 sq mi (11,689 km2)Maricopa County 9,224 sq mi (23,890 km2)Mohave County 13,470 sq mi (34,887 km2)Navajo County 9,959 sq mi (25,794 km2)Pima County 9,189 sq mi (23,799 km2)Pinal County 5,374 sq mi (13,919 km2)Santa Cruz County 1,238 sq mi (3,206 km2)Yavapai County 8,128 sq mi (21,051 km2)Yuma County 5,519 sq mi (14,294 km2)
Arizona, USA - 113,998 sq miles.
King County, Washington, USA - 2,307 sq miles.
Adair County, KY is 412 sq miles (1,067 km²)
coconino county with 18,661 sq mi
basically... Yuma County, Yavapai County, Pima County, and Mohave County. i put more info on all 15 counties below but its alot easier to read on the website http://en.wikipedia.org/wiki/List_of_counties_in_Arizona Apache County St. Johns 1879 Part of Yavapai County. The Apache Native American people, who are resident in northeastern Arizona. 69,423 11,218 sq mi (29,054 km²) Cochise County Bisbee 1881 Part of Pima County. Cochise, the Apache Native American leader. 117,755 6,219 sq mi (16,107 km²) Coconino County Flagstaff 1891 Part of Yavapai County. Coconino Native American people, a Hopi designation for Havasupai and Yavapai people. 116,320 18,661 sq mi (48,332 km²) Gila County Globe 1881 Parts of Maricopa County and Pinal County. Gila River, a river that flows through Arizona, whose name comes from a Pima Indian word. 51,335 4,796 sq mi (12,422 km²) Graham County Safford 1881 Parts of Apache County and Pima County. Mount Graham, a mountain located in Arizona's Pinaleno Mountains. 33,489 4,641 sq mi (12,020 km²) Greenlee County Clifton 1909 Part of Graham County. Mason Greenlee, a pioneer prospector in the area who died in 1903.[6] 8,547 1,848 sq mi (4,786 km²) La Paz County Parker 1983 Part of Yuma County. La Paz, Arizona, a historic boomtown on the Colorado River. La paz means the peace in Spanish. 19,715 4,513 sq mi (11,689 km²) Maricopa County Phoenix 1871 Parts of Pima County and Yavapai County. Maricopa Native American people. 3,072,149 9,224 sq mi (23,890 km²) Mohave County Kingman 1864 One of the original 4 counties. Mohave Indians, one of the Yuma tribes. 155,032 13,470 sq mi (34,887 km²) Navajo County Holbrook 1895 Part of Apache County. Navajo Native American people. 97,470 9,959 sq mi (25,794 km²) Pima County Tucson 1864 One of the original 4 counties. Pima Native American people, called in their own language Akimel O'odham (river people). 1,023,320 9,189 sq mi (23,799 km²) Pinal County Florence 1875 Parts of Maricopa and Pima Counties. Pinal Mountains (named from the Spanish for stand of pines) and the Pinal Indian people (a band of Coyotero Apaches) who lived there. 179,727 5,374 sq mi (13,919 km²) Santa Cruz County Nogales 1899 Parts of Cochise and Pima Counties. Santa Cruz River, a small river that flows through Arizona. 38,381 1,238 sq mi (3,206 km²) Yavapai County Prescott 1864 One of the original 4 counties. Yavapai Native American people, who are from central Arizona 167,517 8,128 sq mi (21,051 km²) Yuma County Yuma 1864 One of the original 4 counties. Yuma Indians, today called the Quechan. 160,026 5,519 sq mi (14,294 km²)
Gilpin county with 150.15 sq mi
1. Ware 903 sq miles 2. Burke 831 sq miles 3. Laurens 813 sq miles 4. Clinch 809 sq miles 5. Charlton 781 sq miles
Union County. 1,039 sq miles