CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in San Luis Obispo 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 San Luis Obispo County zip codes during the period from 2012 to 2016.
Retail trade businesses with between one and four employees in San Luis Obispo County (2012-2016)
Year
Total businesses
2012
524
2013
529
2014
508
2015
504
2016
507