CBP data indicates that there are more establishments categorized as retail trade businesses with between one and four employees in 31021 than in any other category.
The following table shows how many health care and social assistance businesses with between one and four employees were in 31021 during the period from 2012 to 2016.
Health care and social assistance businesses with between one and four employees in 31021 (2012-2016)
Year
Total businesses
2012
44
2013
44
2014
51
2015
52
2016
50