CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between 250 and 499 employees in San Mateo County zip codes than in any other category.
The following table shows how many retail trade businesses with between 250 and 499 employees were in San Mateo County zip codes during the period from 2012 to 2016.
Retail trade businesses with between 250 and 499 employees in San Mateo County (2012-2016)
Year
Total businesses
2012
10
2013
11
2014
12
2015
13
2016
10