CBP data indicates that there are more establishments categorized as professional, scientific and technical services businesses with between one and four employees in Allegheny 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 Allegheny County zip codes during the period from 2012 to 2016.
Real estate, rental and leasing businesses with between one and four employees in Allegheny County (2012-2016)
Year
Total businesses
2012
773
2013
808
2014
798
2015
794
2016
797
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