There were 164 total businesses in the county zip codes, with 30 accommodation and food services businesses (18.3%) accounting for the largest proportion of these businesses. 120 businesses (73.2%) had fewer than five employees, and none had 250 or more.
The county with the largest median business size was Nez Perce County. Median-sized businesses in Nez Perce County was between five and nine.
The following table shows the median business size in all Idaho counties.
Median business size in all Idaho counties (2016)
| County | Total Employees |
|---|---|
| Ada County | 1-4 |
| Adams County | 1-4 |
| Bannock County | 1-4 |
| Bear Lake County | 1-4 |
| Benewah County | 1-4 |
| Bingham County | 1-4 |
| Blaine County | 1-4 |
| Boise County | 1-4 |
| Bonner County | 1-4 |
| Bonneville County | 1-4 |
| Boundary County | 1-4 |
| Butte County | 1-4 |
| Camas County | 1-4 |
| Canyon County | 1-4 |
| Caribou County | 1-4 |
| Cassia County | 1-4 |
| Clark County | 1-4 |
| Clearwater County | 1-4 |
| Custer County | 1-4 |
| Elmore County | 1-4 |
| Franklin County | 1-4 |
| Fremont County | 1-4 |
| Gem County | 1-4 |
| Gooding County | 1-4 |
| Idaho County | 1-4 |
| Jefferson County | 1-4 |
| Jerome County | 1-4 |
| Kootenai County | 1-4 |
| Latah County | 1-4 |
| Lemhi County | 1-4 |
| Lewis County | 1-4 |
| Lincoln County | 1-4 |
| Madison County | 1-4 |
| Minidoka County | 1-4 |
| Nez Perce County | 5-9 |
| Oneida County | 1-4 |
| Owyhee County | 1-4 |
| Payette County | 1-4 |
| Power County | 1-4 |
| Shoshone County | 1-4 |
| Teton County | 1-4 |
| Twin Falls County | 1-4 |
| Valley County | 1-4 |
| Washington County | 1-4 |
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