| Publicly traded | 10 thousand |
| Privately held | 10 thousand |
| Total | 20 thousand |
| Businesses with fewer than 25 employees and less than $10 million in annual revenue | 3 million |
| Businesses with between 25 and 2,000 employees | 2.68 million |
| Total | 5.68 million |
| Home-based businesses | 13 million |
| Sole proprietor firms located outside of home | 5 million |
| Total | 18 million |
*All numbers are approximate and rounded to the nearest 10 thousand.