CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 91770 than in any other category.
The following table shows how many wholesale trade businesses with between one and four employees were in 91770 during the period from 2012 to 2016.
Wholesale trade businesses with between one and four employees in 91770 (2012-2016)
Year
Total businesses
2012
88
2013
98
2014
101
2015
102
2016
102