There were 23 retail trade businesses in Carroll County zip codes that had between one and four 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 construction businesses with between one and four employees in Carroll 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 Carroll County zip codes during the period from 2012 to 2016.