CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in San Francisco County zip codes than in any other category.
The following table shows how many transportation and warehousing businesses with between one and four employees were in San Francisco County zip codes during the period from 2012 to 2016.
Transportation and warehousing businesses with between one and four employees in San Francisco County (2012-2016)
Year
Total businesses
2012
219
2013
216
2014
228
2015
233
2016
239