- Agriculture, Forestry & Fishing
- Agricultural Production Crops (26)
- Agriculture production livestock and animal specialties (16)
- Agricultural Services (110)
- Forestry (9)
- Fishing, hunting, and trapping (1)
- Construction & Mining
- Metal Mining (1)
- Coal Mining (1)
- Oil And Gas Extraction (4)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (5)
- Building Construction General Contractors And Operative Builders (276)
- Heavy Construction Other Than Building Construction Contractors (31)
- Construction Special Trade Contractors (435)
- Manufacturing
- Food And Kindred Products (20)
- Textile Mill Products (5)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (20)
- Lumber And Wood Products, Except Furniture (30)
- Furniture And Fixtures (11)
- Paper And Allied Products (6)
- Printing, Publishing, And Allied Industries (83)
- Chemicals And Allied Products (12)
- Petroleum Refining And Related Industries (2)
- Rubber And Miscellaneous Plastics Products (4)
- Leather And Leather Products (6)
- Stone, Clay, Glass, And Concrete Products (16)
- Primary Metal Industries (5)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (27)
- Industrial And Commercial Machinery And Computer Equipment (30)
- Manufacturing (con't)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (16)
- Transportation Equipment (17)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (15)
- Miscellaneous Manufacturing Industries (50)
- Transportation & Utilities
- Railroad Transportation (4)
- Local And Suburban Transit And Interurban Highway Passenger Transportation (22)
- Motor Freight Transportation And Warehousing (119)
- United States Postal Service (5)
- Water Transportation (18)
- Transportation By Air (8)
- Pipelines, Except Natural Gas (2)
- Transportation Services (51)
- Communications (71)
- Electric, Gas, And Sanitary Services (44)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (290)
- Wholesale Trade-non-durable Goods (118)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (95)
- General Merchandise Stores (27)
- Food Stores (139)
- Automotive Dealers And Gasoline Service Stations (157)
- Apparel And Accessory Stores (122)
- Home Furniture, Furnishings, And Equipment Stores (129)
- Eating And Drinking Places (315)
- Miscellaneous Retail (485)
- Finance, Insurance & Real Estate (con't)
- Insurance Carriers (22)
- Insurance Agents, Brokers, And Service (115)
- Real Estate (415)
- Holding And Other Investment Offices (74)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (101)
- Personal Services (285)
- Business Services (2027)
- Automotive Repair, Services, And Parking (195)
- Miscellaneous Repair Services (168)
- Motion Pictures (41)
- Amusement And Recreation Services (163)
- Health Services (437)
- Legal Services (106)
- Educational Services (142)
- Social Services (413)
- Museums, Art Galleries, And Botanical And Zoological Gardens (18)
- Membership Organizations (333)
- Engineering, Accounting, Research, Management, And Related Services (424)
- Miscellaneous Services (103)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (74)
- Justice, Public Order, And Safety (32)
- Public Finance, Taxation, And Monetary Policy (7)
- Administration Of Human Resource Programs (22)
- Administration Of Environmental Quality And Housing Programs (24)
- Administration Of Economic Programs (28)
- National Security And International Affairs (18)
- Nonclassifiable Establishments (536)
