FIPS Code | State | County name | 1993 Rural-urban continuum code | Description | County population 1990 |
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| 04001 | AZ | Apache County | 5 | Nonmetro county with urban pop. of 20,000 or more, not adjacent to a metro area | 61,591 | | 04003 | AZ | Cochise County | 4 | Nonmetro county with urban pop. of 20,000 or more, adjacent to a metro area | 97,624 | | 04005 | AZ | Coconino County | 5 | Nonmetro county with urban pop. of 20,000 or more, not adjacent to a metro area | 96,591 | | 04007 | AZ | Gila County | 4 | Nonmetro county with urban pop. of 20,000 or more, adjacent to a metro area | 40,216 | | 04009 | AZ | Graham County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 26,554 | | 04011 | AZ | Greenlee County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 8,008 | | 04012 | AZ | La Paz County | 7 | Nonmetro county with urban pop. of 2,500-19,999, not adjacent to a metro area | 13,844 | | 04013 | AZ | Maricopa County | 0 | Central county of a metro area with 1 million population or more | 2,122,101 | | 04015 | AZ | Mohave County | 2 | County in metro area of 250,000 to 1 million population | 93,497 | | 04017 | AZ | Navajo County | 5 | Nonmetro county with urban pop. of 20,000 or more, not adjacent to a metro area | 77,658 | | 04019 | AZ | Pima County | 2 | County in metro area of 250,000 to 1 million population | 666,880 | | 04021 | AZ | Pinal County | 1 | Fringe county of a metro area with 1 million population or more | 116,379 | | 04023 | AZ | Santa Cruz County | 6 | Nonmetro county with urban pop. of 2,500-19,999, adjacent to a metro area | 29,676 | | 04025 | AZ | Yavapai County | 4 | Nonmetro county with urban pop. of 20,000 or more, adjacent to a metro area | 107,714 | | 04027 | AZ | Yuma County | 3 | County in metro area of fewer than 250,000 population | 106,895 |
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