CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 7501 than in any other category.
The following table shows how many construction businesses with between one and four employees were in 7501 during the period from 2012 to 2016.
Construction businesses with between one and four employees in 7501 (2012-2016)
Year
Total businesses
2012
19
2013
18
2014
15
2015
15
2016
16