County Business and Demographics Interactive Map that combines data from the decennial Census and the annual Country Business Patterns publications. Business statistics such as payroll and number of businesses and employees are available on national, state, and county levels. You can select a single location and view industry-specific data, or compare the same across multiple locations.
If you use the map, state data is the default. Use the "Zoom In" option to drill down to county data. You can also search by location and zip code.