15 Counties — arizona
| County | Type | Population | Land area |
|---|
| apache | County | 69,423 | 11,206 sq mi |
| cochise | County | 117,755 | 6,170 sq mi |
| coconino | County | 116,320 | 18,619 sq mi |
| gila | County | 51,335 | 4,768 sq mi |
| graham | County | 33,489 | 4,630 sq mi |
| greenlee | County | 8,547 | 1,847 sq mi |
| la paz | County | 19,715 | 4,500 sq mi |
| maricopa | County | 3,072,149 | 9,204 sq mi |
| mohave | County | 155,032 | 13,312 sq mi |
| navajo | County | 97,470 | 9,954 sq mi |
| pima | County | 843,746 | 9,187 sq mi |
| pinal | County | 179,727 | 5,370 sq mi |
| santa cruz | County | 38,381 | 1,238 sq mi |
| yavapai | County | 167,517 | 8,124 sq mi |
| yuma | County | 160,026 | 5,514 sq mi |