Below, find a complete list of Arizona counties. Also find the county seat, year established and area.
Apache County - St. Johns, 1879, 11,218 sq mi
Cochise County - Bisbee, 1881, 6,219 sq mi
Coconino County - Flagstaff, 1891, 18,661 sq mi
Gila County - Globe, 1881, 4,796 sq mi
Graham County - Safford, 1881, 4,641 sq mi
Greenlee County - Clifton, 1909, 1,848 sq mi
La Paz County - Parker, 1983, 4,513 sq mi
Maricopa County - Phoenix, 1871, 9,224 sq mi
Mohave County - Kingman, 1864, 13,470 sq mi
Navajo County - Holbrook, 1895, 9,959 sq mi
Pima County - Tucson, 1864, 9,189 sq mi
Pinal County - Florence, 1875, 5,374 sq mi
Santa Cruz County - Nogales, 1899, 1,238 sq mi
Yavapai County - Prescott, 1864, 8,128 sq mi
Yuma County - Yuma, 1864, 5,519 sq mi
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