| County | FIPS |
|---|---|
| Apache County | 04001 |
| Cochise County | 04003 |
| Coconino County | 04005 |
| Gila County | 04007 |
| Graham County | 04009 |
| Greenlee County | 04011 |
| La Paz County | 04012 |
| Maricopa County | 04013 |
| Mohave County | 04015 |
| Navajo County | 04017 |
| Pima County | 04019 |
| Pinal County | 04021 |
| Santa Cruz County | 04023 |
| Yavapai County | 04025 |
| Yuma County | 04027 |