CBP data indicates that there are more establishments categorized as construction businesses with between one and four employees in Rock County zip codes than in any other category.
The following table shows how many real estate, rental and leasing businesses with between one and four employees were in Rock County zip codes during the period from 2012 to 2016.
Real estate, rental and leasing businesses with between one and four employees in Rock County (2012-2016)
Year
Total businesses
2012
78
2013
82
2014
76
2015
80
2016
84