- Agriculture, Forestry & Fishing
- Agricultural Production Crops (78)
- Agriculture production livestock and animal specialties (19)
- Agricultural Services (864)
- Forestry (2)
- Fishing, hunting, and trapping (4)
- Construction & Mining
- Metal Mining (16)
- Coal Mining (7)
- Oil And Gas Extraction (17)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (29)
- Building Construction General Contractors And Operative Builders (1933)
- Heavy Construction Other Than Building Construction Contractors (195)
- Construction Special Trade Contractors (2758)
- Manufacturing
- Food And Kindred Products (119)
- Tobacco Products (3)
- Textile Mill Products (45)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (134)
- Lumber And Wood Products, Except Furniture (101)
- Furniture And Fixtures (91)
- Paper And Allied Products (92)
- Printing, Publishing, And Allied Industries (638)
- Chemicals And Allied Products (259)
- Petroleum Refining And Related Industries (48)
- Rubber And Miscellaneous Plastics Products (130)
- Leather And Leather Products (12)
- Stone, Clay, Glass, And Concrete Products (124)
- Primary Metal Industries (198)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (628)
- Industrial And Commercial Machinery And Computer Equipment (747)
- Manufacturing (con't)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (245)
- Transportation Equipment (126)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (214)
- Miscellaneous Manufacturing Industries (326)
- Transportation & Utilities
- Railroad Transportation (10)
- Local And Suburban Transit And Interurban Highway Passenger Transportation (187)
- Motor Freight Transportation And Warehousing (815)
- United States Postal Service (51)
- Water Transportation (45)
- Transportation By Air (73)
- Pipelines, Except Natural Gas (3)
- Transportation Services (552)
- Communications (543)
- Electric, Gas, And Sanitary Services (224)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (2875)
- Wholesale Trade-non-durable Goods (1133)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (485)
- General Merchandise Stores (296)
- Food Stores (1325)
- Automotive Dealers And Gasoline Service Stations (1118)
- Apparel And Accessory Stores (926)
- Home Furniture, Furnishings, And Equipment Stores (934)
- Eating And Drinking Places (3041)
- Miscellaneous Retail (2825)
- Finance, Insurance & Real Estate (con't)
- Insurance Agents, Brokers, And Service (947)
- Real Estate (2939)
- Holding And Other Investment Offices (876)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (242)
- Personal Services (2759)
- Business Services (9752)
- Automotive Repair, Services, And Parking (1555)
- Miscellaneous Repair Services (1390)
- Motion Pictures (309)
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- Museums, Art Galleries, And Botanical And Zoological Gardens (102)
- Membership Organizations (2680)
- Engineering, Accounting, Research, Management, And Related Services (3905)
- Miscellaneous Services (639)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (161)
- Justice, Public Order, And Safety (248)
- Public Finance, Taxation, And Monetary Policy (44)
- Administration Of Human Resource Programs (130)
- Administration Of Environmental Quality And Housing Programs (124)
- Administration Of Economic Programs (98)
- National Security And International Affairs (40)
- Nonclassifiable Establishments (5485)