CBP data indicates that there are more establishments categorized as health care and social assistance businesses with between one and four employees in 42420 than in any other category.
The following table shows how many construction businesses with between one and four employees were in 42420 during the period from 2012 to 2016.
Construction businesses with between one and four employees in 42420 (2012-2016)
Year
Total businesses
2012
40
2013
39
2014
39
2015
42
2016
35