CBP data indicates that there were 20,386 total businesses in Pima County zip codes.
The following table gives a breakdown of businesses in Pima County by total employees in 2017.
Businesses in Pima County (2017) by total employees
| Total employees | Total businesses |
|---|---|
| 0 to 4 | 10,392 |
| 5 to 9 | 3,926 |
| 10 to 19 | 2,930 |
| 20 to 49 | 1,993 |
| 50 to 99 | 597 |
| 100 to 249 | 331 |
| 250 to 499 | 69 |
| more than 500 | 7 |