CBP data indicates there were 301 total businesses in Rock County.
The following table gives a breakdown of businesses in Rock County by total employees in 2019.
Businesses in Rock County (2019) by total employees
| Total employees | Total businesses |
|---|---|
| 0 to 4 | 170 |
| 5 to 9 | 63 |
| 10 to 19 | 31 |
| 20 to 49 | 18 |
| 50 to 99 | 6 |
| 100 to 249 | 0-2 |
| 250 to 499 | 0-2 |
| more than 500 | 0-2 |
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