CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 21206 than in any other category.
The following table shows how many construction businesses with between one and four employees were in 21206 during the period from 2012 to 2016.
Construction businesses with between one and four employees in 21206 (2012-2016)
Year
Total businesses
2012
37
2013
36
2014
39
2015
35
2016
41
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