- Agriculture, Forestry & Fishing
- Agricultural Production Crops (2)
- Agriculture production livestock and animal specialties (16)
- Agricultural Services (19)
- Forestry (1)
- Construction & Mining
- Coal Mining (1)
- Oil And Gas Extraction (89)
- Building Construction General Contractors And Operative Builders (67)
- Heavy Construction Other Than Building Construction Contractors (18)
- Construction Special Trade Contractors (122)
- Manufacturing
- Food And Kindred Products (10)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (3)
- Lumber And Wood Products, Except Furniture (7)
- Furniture And Fixtures (1)
- Printing, Publishing, And Allied Industries (11)
- Chemicals And Allied Products (10)
- Petroleum Refining And Related Industries (6)
- Rubber And Miscellaneous Plastics Products (1)
- Leather And Leather Products (2)
- Stone, Clay, Glass, And Concrete Products (5)
- Primary Metal Industries (4)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (11)
- Industrial And Commercial Machinery And Computer Equipment (22)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (4)
- Transportation Equipment (1)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (1)
- Manufacturing (con't)
- Miscellaneous Manufacturing Industries (10)
- Transportation & Utilities
- Local And Suburban Transit And Interurban Highway Passenger Transportation (10)
- Motor Freight Transportation And Warehousing (94)
- United States Postal Service (1)
- Transportation By Air (6)
- Pipelines, Except Natural Gas (2)
- Transportation Services (19)
- Communications (27)
- Electric, Gas, And Sanitary Services (23)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (131)
- Wholesale Trade-non-durable Goods (58)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (33)
- General Merchandise Stores (10)
- Food Stores (35)
- Automotive Dealers And Gasoline Service Stations (59)
- Apparel And Accessory Stores (16)
- Home Furniture, Furnishings, And Equipment Stores (37)
- Eating And Drinking Places (91)
- Miscellaneous Retail (139)
- Finance, Insurance & Real Estate (con't)
- Holding And Other Investment Offices (23)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (33)
- Personal Services (81)
- Business Services (676)
- Automotive Repair, Services, And Parking (64)
- Miscellaneous Repair Services (65)
- Motion Pictures (11)
- Amusement And Recreation Services (39)
- Health Services (113)
- Legal Services (33)
- Educational Services (31)
- Social Services (44)
- Museums, Art Galleries, And Botanical And Zoological Gardens (1)
- Membership Organizations (90)
- Engineering, Accounting, Research, Management, And Related Services (95)
- Miscellaneous Services (43)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (21)
- Justice, Public Order, And Safety (15)
- Public Finance, Taxation, And Monetary Policy (1)
- Administration Of Human Resource Programs (6)
- Administration Of Environmental Quality And Housing Programs (6)
- Administration Of Economic Programs (4)
- National Security And International Affairs (3)
- Nonclassifiable Establishments (249)