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 real estate, rental and leasing businesses with between one and four employees were in Sonoma County zip codes during the period from 2012 to 2016.
Real estate, rental and leasing businesses with between one and four employees in Sonoma County (2012-2016)
Year
Total businesses
2012
495
2013
489
2014
476
2015
478
2016
493