- Agriculture, Forestry & Fishing
- Agricultural Production Crops (36)
- Agriculture production livestock and animal specialties (14)
- Agricultural Services (30)
- Forestry (4)
- Construction & Mining
- Metal Mining (1)
- Oil And Gas Extraction (256)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (6)
- Building Construction General Contractors And Operative Builders (64)
- Heavy Construction Other Than Building Construction Contractors (62)
- Construction Special Trade Contractors (191)
- Manufacturing
- Food And Kindred Products (6)
- Textile Mill Products (2)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (3)
- Lumber And Wood Products, Except Furniture (26)
- Furniture And Fixtures (2)
- Printing, Publishing, And Allied Industries (13)
- Chemicals And Allied Products (10)
- Petroleum Refining And Related Industries (7)
- Rubber And Miscellaneous Plastics Products (6)
- Stone, Clay, Glass, And Concrete Products (8)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (15)
- Industrial And Commercial Machinery And Computer Equipment (41)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (3)
- Transportation Equipment (6)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (9)
- Miscellaneous Manufacturing Industries (14)
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- Motor Freight Transportation And Warehousing (107)
- United States Postal Service (5)
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- Wholesale Trade-durable Goods (151)
- Wholesale Trade-non-durable Goods (55)
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- General Merchandise Stores (13)
- Food Stores (48)
- Automotive Dealers And Gasoline Service Stations (80)
- Apparel And Accessory Stores (57)
- Home Furniture, Furnishings, And Equipment Stores (52)
- Eating And Drinking Places (114)
- Miscellaneous Retail (172)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (38)
- Personal Services (124)
- Business Services (301)
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- Miscellaneous Repair Services (107)
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- Executive, Legislative, And General Government, Except Finance (25)
- Justice, Public Order, And Safety (5)
- Public Finance, Taxation, And Monetary Policy (1)
- Administration Of Human Resource Programs (10)
- Administration Of Environmental Quality And Housing Programs (2)
- Administration Of Economic Programs (13)
- National Security And International Affairs (3)
- Nonclassifiable Establishments (1)