CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in Arizona than in any other category.
The following table shows how many specialty trade contractors with between one and four employees were in Arizona during the period from 2012 to 2016.
Specialty trade contractors with between one and four employees in Arizona (2012-2016)
Year
Total businesses
2012
421,717
2013
422,859
2014
427,529
2015
437,145
2016
447,787