Six Digit NAICS Categories
11 - Agriculture, Forestry, Fishing and Hunting
21-23 - Mining, Utilities, Construction
31-33 - Manufacturing
40-Sales, Transportation and Warehousing
50-Information, Finance and Insurance
53-Real Estate and Rental and Leasing
54-Professional, Scientific, and Technical Services
55-Management of Companies and Enterprises
56-Waste Management and Remediation Services
61-Educational Services
62-Health Care and Social Assistance
61-Educational Services
62-Health Care and Social Assistance
71-Arts, Entertainment, and Recreation
72-Accommodation & Food Services
107300 - UTILITY SERVICE
107310 - Gas
107320 - Water
107330 - Electric
107340 - Phone
107350 - Cable
107360 - Sewer
482111 - Line-Haul Railroad
482112 - Short Line Railroad (Includes excursion trains)
Older SIC standard:
20 Food
21 Tobacco
22 Textile Mill
23 Apparel
24 Lumber and Wood
25 Furniture
26 Paper
27 Printing & Publishing
28 Chemicals
29 Petroleum & Coal
30 Rubber & Plastics
31 Leather
32 Stone, Clay, Glass
33 Metal Industries
34 Metal Products
35 Machinery
36 Electronics
37 Transportation Equipment
38 Instruments
39 Other Manufacturing
199200 - Environmental Products