36 Counties — oregon
| County | Type | Population | Land area |
|---|
| baker | County | 16,741 | 3,068 sq mi |
| benton | County | 78,153 | 677 sq mi |
| clackamas | County | 338,391 | 1,868 sq mi |
| clatsop | County | 35,630 | 827 sq mi |
| columbia | County | 43,560 | 657 sq mi |
| coos | County | 62,779 | 1,601 sq mi |
| crook | County | 19,182 | 2,980 sq mi |
| curry | County | 21,137 | 1,627 sq mi |
| deschutes | County | 115,367 | 3,018 sq mi |
| douglas | County | 100,399 | 5,037 sq mi |
| gilliam | County | 1,915 | 1,204 sq mi |
| grant | County | 7,935 | 4,529 sq mi |
| harney | County | 7,609 | 10,135 sq mi |
| hood river | County | 20,411 | 522 sq mi |
| jackson | County | 181,269 | 2,785 sq mi |
| jefferson | County | 19,009 | 1,781 sq mi |
| josephine | County | 75,726 | 1,640 sq mi |
| klamath | County | 63,775 | 5,945 sq mi |
| lake | County | 7,422 | 8,136 sq mi |
| lane | County | 322,959 | 4,554 sq mi |
| lincoln | County | 44,479 | 980 sq mi |
| linn | County | 103,069 | 2,291 sq mi |
| malheur | County | 31,615 | 9,888 sq mi |
| marion | County | 284,834 | 1,185 sq mi |
| morrow | County | 10,995 | 2,033 sq mi |
| multnomah | County | 660,486 | 435 sq mi |
| polk | County | 62,380 | 741 sq mi |
| sherman | County | 1,934 | 823 sq mi |
| tillamook | County | 24,262 | 1,102 sq mi |
| umatilla | County | 70,548 | 3,215 sq mi |
| union | County | 24,530 | 2,037 sq mi |
| wallowa | County | 7,226 | 3,145 sq mi |
| wasco | County | 23,791 | 2,381 sq mi |
| washington | County | 445,342 | 724 sq mi |
| wheeler | County | 1,547 | 1,715 sq mi |
| yamhill | County | 84,992 | 716 sq mi |