CBP data indicates that there were 4,299 total businesses in Napa County zip codes.
The following table gives a breakdown of businesses in Napa County by total employees in 2017.
Businesses in Napa County (2017) by total employees
| Total employees | Total businesses |
|---|---|
| 0 to 4 | 2,259 |
| 5 to 9 | 805 |
| 10 to 19 | 556 |
| 20 to 49 | 423 |
| 50 to 99 | 147 |
| 100 to 249 | 77 |
| 250 to 499 | 10 |
| more than 500 | 4 |
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