CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in San Diego County zip codes than in any other category.
The following table shows how many construction businesses with between one and four employees were in San Diego County zip codes during the period from 2012 to 2016.
Construction businesses with between one and four employees in San Diego County (2012-2016)
Year
Total businesses
2012
4061
2013
4048
2014
4085
2015
4221
2016
4383
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