CBP data indicates that there are more establishments categorized as construction businesses with between one and four employees in Iowa than in any other category.
The following table shows how many pipeline transportation businesses with between one and four employees were in Iowa during the period from 2012 to 2016.
Pipeline transportation businesses with between one and four employees in Iowa (2012-2016)
Year
Total businesses
2012
3,627
2013
3,791
2014
4,189
2015
3,671
2016
3,695