Noted by our colleagues at the Hill Library:
Where can you find data on how many US businesses open and close each year and the impact this has on the economy? Where can you track firm age, firm size, and firm performance over time at state and national levels?
The Census Bureau recently launched Business Dynamics Statistics (BDS) to track the changing landscape of entrepreneurial activity in the United States. BDS tracks business activity, annual changes in employment, and growing and shrinking businesses. It includes unique information on firm age and firm size and tracks firms over time. BDS currently includes data for 1976-2005.
So use Business Dynamics Statistics today to access data for your industry or region.