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 transportation and warehousing businesses with between one and four employees were in Allegheny County zip codes during the period from 2012 to 2016.
Transportation and warehousing businesses with between one and four employees in Allegheny County (2012-2016)
Year
Total businesses
2012
233
2013
258
2014
245
2015
250
2016
246
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