CBP data indicates that there are more establishments categorized as retail trade businesses with between five and nine employees in San Diego County zip codes than in any other category.
The following table shows how many transportation and warehousing businesses with between five and nine employees were in San Diego County zip codes during the period from 2012 to 2016.
Transportation and warehousing businesses with between five and nine employees in San Diego County (2012-2016)
Year
Total businesses
2012
260
2013
279
2014
279
2015
294
2016
281