CBP data indicates that there are more establishments categorized as construction businesses with between one and four employees in 30518 than in any other category.
The following table shows how many wholesale trade businesses with between one and four employees were in 30518 during the period from 2012 to 2016.
Wholesale trade businesses with between one and four employees in 30518 (2012-2016)
Year
Total businesses
2012
59
2013
60
2014
64
2015
56
2016
60