CBP data indicates that there are more establishments categorized as construction businesses with between one and four employees in Amador 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 Amador County zip codes during the period from 2012 to 2016.
Retail trade businesses with between one and four employees in Amador County (2012-2016)
Year
Total businesses
2012
58
2013
59
2014
57
2015
55
2016
47