CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in Dupage County zip codes than in any other category.
The following table shows how many industries not classified businesses with between one and four employees were in Dupage County zip codes during the period from 2012 to 2016.
Industries not classified businesses with between one and four employees in Dupage County (2012-2016)
Year
Total businesses
2012
13
2013
20
2014
31
2015
44
2016
40