There were 11,562 total businesses in the county zip codes, with 1,713 construction businesses (14.8%) accounting for the largest proportion of these businesses. 6,717 businesses (58.1%) had fewer than five employees, and 62 (0.5%) had 250 or more.
The county with the largest median business size was Benton County. Median-sized businesses in Benton County was between five and nine.
The following table shows the median business size in all Oregon counties.
Median business size in all Oregon counties (2016)
| County | Total Employees |
|---|---|
| Baker County | 1-4 |
| Benton County | 5-9 |
| Clackamas County | 1-4 |
| Clatsop County | 1-4 |
| Columbia County | 1-4 |
| Coos County | 1-4 |
| Crook County | 1-4 |
| Curry County | 1-4 |
| Deschutes County | 1-4 |
| Douglas County | 1-4 |
| Gilliam County | 1-4 |
| Grant County | 1-4 |
| Harney County | 1-4 |
| Hood River County | 1-4 |
| Jackson County | 1-4 |
| Jefferson County | 1-4 |
| Josephine County | 1-4 |
| Klamath County | 1-4 |
| Lake County | 1-4 |
| Lane County | 1-4 |
| Lincoln County | 1-4 |
| Linn County | 1-4 |
| Malheur County | 1-4 |
| Marion County | 1-4 |
| Morrow County | 1-4 |
| Multnomah County | 1-4 |
| Polk County | 1-4 |
| Sherman County | 1-4 |
| Tillamook County | 1-4 |
| Umatilla County | 1-4 |
| Union County | 1-4 |
| Wallowa County | 1-4 |
| Wasco County | 1-4 |
| Washington County | 1-4 |
| Wheeler County | 1-4 |
| Yamhill County | 1-4 |
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