- Agriculture, Forestry & Fishing
- Agricultural Production Crops (17)
- Agriculture production livestock and animal specialties (12)
- Agricultural Services (227)
- Forestry (12)
- Fishing, hunting, and trapping (37)
- Construction & Mining
- Metal Mining (16)
- Coal Mining (3)
- Oil And Gas Extraction (101)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (6)
- Building Construction General Contractors And Operative Builders (635)
- Heavy Construction Other Than Building Construction Contractors (152)
- Construction Special Trade Contractors (873)
- Manufacturing
- Food And Kindred Products (55)
- Textile Mill Products (7)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (35)
- Lumber And Wood Products, Except Furniture (50)
- Furniture And Fixtures (16)
- Paper And Allied Products (3)
- Printing, Publishing, And Allied Industries (144)
- Chemicals And Allied Products (28)
- Petroleum Refining And Related Industries (15)
- Rubber And Miscellaneous Plastics Products (18)
- Leather And Leather Products (4)
- Stone, Clay, Glass, And Concrete Products (20)
- Primary Metal Industries (5)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (48)
- Industrial And Commercial Machinery And Computer Equipment (60)
- Manufacturing (con't)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (28)
- Transportation Equipment (47)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (27)
- Miscellaneous Manufacturing Industries (73)
- Transportation & Utilities
- Railroad Transportation (2)
- Local And Suburban Transit And Interurban Highway Passenger Transportation (55)
- Motor Freight Transportation And Warehousing (239)
- United States Postal Service (8)
- Water Transportation (60)
- Transportation By Air (162)
- Pipelines, Except Natural Gas (9)
- Transportation Services (234)
- Communications (192)
- Electric, Gas, And Sanitary Services (136)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (684)
- Wholesale Trade-non-durable Goods (341)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (173)
- General Merchandise Stores (36)
- Food Stores (249)
- Automotive Dealers And Gasoline Service Stations (303)
- Apparel And Accessory Stores (196)
- Home Furniture, Furnishings, And Equipment Stores (270)
- Eating And Drinking Places (741)
- Miscellaneous Retail (886)
- Finance, Insurance & Real Estate (con't)
- Insurance Carriers (46)
- Insurance Agents, Brokers, And Service (202)
- Real Estate (815)
- Holding And Other Investment Offices (213)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (337)
- Personal Services (751)
- Business Services (4506)
- Automotive Repair, Services, And Parking (442)
- Miscellaneous Repair Services (364)
- Motion Pictures (112)
- Amusement And Recreation Services (410)
- Health Services (1146)
- Legal Services (485)
- Educational Services (329)
- Social Services (529)
- Museums, Art Galleries, And Botanical And Zoological Gardens (34)
- Membership Organizations (693)
- Engineering, Accounting, Research, Management, And Related Services (1541)
- Miscellaneous Services (325)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (88)
- Justice, Public Order, And Safety (73)
- Public Finance, Taxation, And Monetary Policy (12)
- Administration Of Human Resource Programs (73)
- Administration Of Environmental Quality And Housing Programs (139)
- Administration Of Economic Programs (81)
- National Security And International Affairs (71)
- Nonclassifiable Establishments (2325)
