| County | FIPS |
|---|---|
| Baker County | 41001 |
| Benton County | 41003 |
| Clackamas County | 41005 |
| Clatsop County | 41007 |
| Columbia County | 41009 |
| Coos County | 41011 |
| Crook County | 41013 |
| Curry County | 41015 |
| Deschutes County | 41017 |
| Douglas County | 41019 |
| Gilliam County | 41021 |
| Grant County | 41023 |
| Harney County | 41025 |
| Hood River County | 41027 |
| Jackson County | 41029 |
| Jefferson County | 41031 |
| Josephine County | 41033 |
| Klamath County | 41035 |
| Lake County | 41037 |
| Lane County | 41039 |
| Lincoln County | 41041 |
| Linn County | 41043 |
| Malheur County | 41045 |
| Marion County | 41047 |
| Morrow County | 41049 |
| Multnomah County | 41051 |
| Polk County | 41053 |
| Sherman County | 41055 |
| Tillamook County | 41057 |
| Umatilla County | 41059 |
| Union County | 41061 |
| Wallowa County | 41063 |
| Wasco County | 41065 |
| Washington County | 41067 |
| Wheeler County | 41069 |
| Yamhill County | 41071 |