The reality is the vast majority of the jobs in the US are at a small % of the businesses.
I got data from the Statistics about Business Size (including Small Business) from the U.S. Census Bureau their data only goes up to 2008 but its the most recent available.
As of 2008 only 10.7% of the employer firms employed over 20 people. Business of 20+ employed 82.2% of the total.
This does not count the nonemployer firms that do not have employees. There are approximately 21 million nonemployer firms most of which are sole proprietors.
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