CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in 21209 than in any other category.
The following table shows how many retail trade businesses with between one and four employees were in 21209 during the period from 2012 to 2016.
Retail trade businesses with between one and four employees in 21209 (2012-2016)
Year
Total businesses
2012
27
2013
29
2014
26
2015
32
2016
28