CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 28315 than in any other category.
The following table shows how many construction businesses with between one and four employees were in 28315 during the period from 2012 to 2016.
Construction businesses with between one and four employees in 28315 (2012-2016)
Year
Total businesses
2012
20
2013
23
2014
24
2015
22
2016
19