There were 13 transportation and warehousing businesses in Dupage County zip codes that had between 250 and 499 employees in 2016, according to County Business Patterns (CBP) statistics provided by the United States Census Bureau.

CBP data indicates that there are more establishments categorized as administrative, support, waste management and remediation services businesses with between 250 and 499 employees in Dupage County zip codes than in any other category.

The following table shows how many transportation and warehousing businesses with between 250 and 499 employees were in Dupage County zip codes during the period from 2012 to 2016.