CBP data indicates there were 3,358 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 | 1,601 |
| 5 to 9 | 690 |
| 10 to 19 | 453 |
| 20 to 49 | 360 |
| 50 to 99 | 120 |
| 100 to 249 | 70 |
| 250 to 499 | 23 |
| more than 500 | 6 |
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