There were 4,752 total businesses in the county zip codes, with 693 retail trade businesses (14.6%) accounting for the largest proportion of these businesses. 2,781 businesses (58.5%) had fewer than five employees, and 17 (0.4%) had 250 or more.
Median-sized businesses in two counties have between five and nine employees.
The following table shows the median business size in all Connecticut counties.
Median business size in all Connecticut counties (2016)
| County | Total Employees |
|---|---|
| Fairfield County | 1-4 |
| Hartford County | 5-9 |
| Litchfield County | 1-4 |
| Middlesex County | 1-4 |
| New Haven County | 1-4 |
| New London County | 1-4 |
| Tolland County | 1-4 |
| Windham County | 5-9 |
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