- Agriculture, Forestry & Fishing
- Agricultural Production Crops (70)
- Agriculture production livestock and animal specialties (35)
- Agricultural Services (179)
- Forestry (5)
- Fishing, hunting, and trapping (6)
- Construction & Mining
- Metal Mining (4)
- Coal Mining (3)
- Oil And Gas Extraction (82)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (2)
- Building Construction General Contractors And Operative Builders (453)
- Heavy Construction Other Than Building Construction Contractors (61)
- Construction Special Trade Contractors (640)
- Manufacturing
- Food And Kindred Products (20)
- Textile Mill Products (11)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (27)
- Lumber And Wood Products, Except Furniture (37)
- Furniture And Fixtures (14)
- Paper And Allied Products (3)
- Printing, Publishing, And Allied Industries (72)
- Chemicals And Allied Products (19)
- Petroleum Refining And Related Industries (4)
- Rubber And Miscellaneous Plastics Products (4)
- Leather And Leather Products (3)
- Stone, Clay, Glass, And Concrete Products (24)
- Primary Metal Industries (4)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (32)
- Industrial And Commercial Machinery And Computer Equipment (63)
- Manufacturing (con't)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (21)
- Transportation Equipment (10)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (24)
- Miscellaneous Manufacturing Industries (67)
- Transportation & Utilities
- Railroad Transportation (2)
- Local And Suburban Transit And Interurban Highway Passenger Transportation (12)
- Motor Freight Transportation And Warehousing (223)
- United States Postal Service (3)
- Water Transportation (1)
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- Pipelines, Except Natural Gas (1)
- Transportation Services (67)
- Communications (90)
- Electric, Gas, And Sanitary Services (51)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (419)
- Wholesale Trade-non-durable Goods (153)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (130)
- General Merchandise Stores (21)
- Food Stores (123)
- Automotive Dealers And Gasoline Service Stations (177)
- Apparel And Accessory Stores (108)
- Home Furniture, Furnishings, And Equipment Stores (183)
- Eating And Drinking Places (291)
- Miscellaneous Retail (543)
- Finance, Insurance & Real Estate (con't)
- Insurance Carriers (21)
- Insurance Agents, Brokers, And Service (133)
- Real Estate (525)
- Holding And Other Investment Offices (198)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (63)
- Personal Services (371)
- Business Services (2617)
- Automotive Repair, Services, And Parking (238)
- Miscellaneous Repair Services (224)
- Motion Pictures (54)
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- Health Services (545)
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- Museums, Art Galleries, And Botanical And Zoological Gardens (9)
- Membership Organizations (276)
- Engineering, Accounting, Research, Management, And Related Services (583)
- Miscellaneous Services (165)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (31)
- Justice, Public Order, And Safety (24)
- Public Finance, Taxation, And Monetary Policy (8)
- Administration Of Human Resource Programs (12)
- Administration Of Environmental Quality And Housing Programs (20)
- Administration Of Economic Programs (17)
- National Security And International Affairs (7)
- Nonclassifiable Establishments (852)