List of Arizona counties
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List of the 15 counties in the U.S. state of Arizona:
- Apache County formed in 1879 from part of Yavapai County.
- Cochise County formed in 1881 from part of Pima County.
- Coconino County formed in 1891 from part of Yavapai County.
- Gila County formed in 1881 from parts of Maricopa County and Pinal County.
- Graham County formed in 1881 from parts of Apache County and Pima County.
- Greenlee County formed in 1909 from part of Graham County.
- La Paz County formed in 1982 from part of Yuma County.
- Maricopa County formed in 1871 from parts of Pima County and Yavapai County.
- Mohave County one of the original 4 counties created in 1864.
- Navajo County formed in 1895 from part of Apache County.
- Pima County one of the original 4 counties created in 1864.
- Pinal County formed in 1875 from parts of Maricopa County and Pima County.
- Santa Cruz County formed in 1899 from parts of Cochise County and Pima County.
- Yavapai County one of the original 4 counties created in 1864.
- Yuma County one of the original 4 counties created in 1864.
There is also one defunct county: Pah-Ute County formed in 1865 from Mohave County. It was returned to Mohave in 1871.
See also: Blank county map of Arizona
