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 retail trade businesses with between one and four employees were in Dupage County zip codes during the period from 2012 to 2016.
Retail trade businesses with between one and four employees in Dupage County (2012-2016)
Year
Total businesses
2012
1470
2013
1395
2014
1381
2015
1366
2016
1369