CBP data indicates that there are more establishments categorized as health care and social assistance businesses with 500 or more employees in California than in any other category.
The following table shows how many mining, quarrying, oil and gas extraction businesses with 500 or more employees were in California during the period from 2012 to 2016.
Mining, quarrying, oil and gas extraction businesses with 500 or more employees in California (2012-2016)
Year
Total businesses
2012
28,909
2013
28,720
2014
29,754
2015
29,225
2016
27,234
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