CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in San Bernardino County zip codes than in any other category.
The following table shows how many mining, quarrying, oil and gas extraction businesses with between one and four employees were in San Bernardino County zip codes during the period from 2012 to 2016.
Mining, quarrying, oil and gas extraction businesses with between one and four employees in San Bernardino County (2012-2016)
Year
Total businesses
2012
9
2013
7
2014
9
2015
7
2016
11
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