CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in Durham 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 Durham County zip codes during the period from 2012 to 2016.
Industries not classified businesses with between one and four employees in Durham County (2012-2016)
Year
Total businesses
2012
6
2013
14
2014
19
2015
37
2016
30