CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in 91001 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 91001 during the period from 2012 to 2016.
Real estate, rental and leasing businesses with between one and four employees in 91001 (2012-2016)
Year
Total businesses
2012
23
2013
21
2014
20
2015
23
2016
26