NAICS Codes
The North American Industry Classification System (NAICS) classifies business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. economy. The NAICS industry codes define establishments based on the activities in which they are primarily engaged. NAICS codes are also used for administrative, contracting, and tax purposes. NAICS is production oriented (not product oriented) and categorizes businesses with others that have similar methods of production.
Interstate Professional Group (IPG) NAICS Codes:
23561
23599
531320
531390
541310
541350
541513
541618
561720
561730
561790
561990
611710
813910
921190
926150