CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in San Mateo County zip codes than in any other category.
The following table shows how many real estate, rental and leasing businesses with between one and four employees were in San Mateo County zip codes during the period from 2012 to 2016.
Real estate, rental and leasing businesses with between one and four employees in San Mateo County (2012-2016)
Year
Total businesses
2012
851
2013
848
2014
869
2015
890
2016
901