CBP data indicates that there are more establishments categorized as construction businesses with between one and four employees in Sonoma County zip codes than in any other category.
The following table shows how many transportation and warehousing businesses with between one and four employees were in Sonoma County zip codes during the period from 2012 to 2016.
Transportation and warehousing businesses with between one and four employees in Sonoma County (2012-2016)
Year
Total businesses
2012
124
2013
123
2014
118
2015
115
2016
122