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 health care and social assistance businesses with between one and four employees were in San Mateo County zip codes during the period from 2012 to 2016.
Health care and social assistance businesses with between one and four employees in San Mateo County (2012-2016)
Year
Total businesses
2012
1180
2013
1214
2014
1217
2015
1259
2016
1239