CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in Maricopa County zip codes than in any other category.
The following table shows how many manufacturing businesses with between one and four employees were in Maricopa County zip codes during the period from 2012 to 2016.
Manufacturing businesses with between one and four employees in Maricopa County (2012-2016)
Year
Total businesses
2012
1130
2013
1115
2014
1073
2015
1095
2016
1070