CBP data indicates that there are more establishments categorized as construction businesses with between one and four employees in 28312 than in any other category.
The following table shows how many retail trade businesses with between one and four employees were in 28312 during the period from 2012 to 2016.
Retail trade businesses with between one and four employees in 28312 (2012-2016)
Year
Total businesses
2012
9
2013
11
2014
12
2015
13
2016
15