CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 21224 than in any other category.
The following table shows how many real estate, rental and leasing businesses with between one and four employees were in 21224 during the period from 2012 to 2016.
Real estate, rental and leasing businesses with between one and four employees in 21224 (2012-2016)
Year
Total businesses
2012
29
2013
34
2014
36
2015
33
2016
43