There were 3,946 total businesses in the county zip codes, with 665 retail trade businesses (16.9%) accounting for the largest proportion of these businesses. 1,982 businesses (50.2%) had fewer than five employees, and 13 (0.3%) had 250 or more.
Median-sized businesses in 16 counties have less than four employees.
The following table shows the median business size in all Maine counties.
Median business size in all Maine counties (2016)
| County | Total Employees |
|---|---|
| Androscoggin County | 1-4 |
| Aroostook County | 1-4 |
| Cumberland County | 1-4 |
| Franklin County | 1-4 |
| Hancock County | 1-4 |
| Kennebec County | 1-4 |
| Knox County | 1-4 |
| Lincoln County | 1-4 |
| Oxford County | 1-4 |
| Penobscot County | 1-4 |
| Piscataquis County | 1-4 |
| Sagadahoc County | 1-4 |
| Somerset County | 1-4 |
| Waldo County | 1-4 |
| Washington County | 1-4 |
| York County | 1-4 |
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