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 utilities with between one and four employees were in Dupage County zip codes during the period from 2012 to 2016.
Utilities with between one and four employees in Dupage County (2012-2016)
Year
Total businesses
2012
10
2013
10
2014
12
2015
10
2016
16