| Rank | County | Percentage of Seniors |
|---|---|---|
| 1 | La Paz County, Arizona | 34.9% |
| 2 | Yavapai County, Arizona | 26.3% |
| 3 | Mohave County, Arizona | 24.9% |
| 4 | Gila County, Arizona | 24.9% |
| 5 | Cochise County, Arizona | 18.1% |
| 6 | Pima County, Arizona | 16.6% |
| 7 | Yuma County, Arizona | 16.4% |
| 8 | Pinal County, Arizona | 15.9% |
| 9 | Navajo County, Arizona | 14.6% |
| 10 | Santa Cruz County, Arizona | 14.6% |
| 11 | Maricopa County, Arizona | 13.0% |
| 12 | Apache County, Arizona | 12.3% |
| 13 | Greenlee County, Arizona | 12.1% |
| 14 | Graham County, Arizona | 11.9% |
| 15 | Coconino County, Arizona | 9.7% |
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