- Agriculture, Forestry & Fishing
- Agricultural Production Crops (105)
- Agriculture production livestock and animal specialties (79)
- Agricultural Services (379)
- Forestry (13)
- Fishing, hunting, and trapping (6)
- Construction & Mining
- Metal Mining (2)
- Oil And Gas Extraction (21)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (4)
- Building Construction General Contractors And Operative Builders (598)
- Heavy Construction Other Than Building Construction Contractors (43)
- Construction Special Trade Contractors (877)
- Manufacturing
- Food And Kindred Products (43)
- Textile Mill Products (10)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (29)
- Lumber And Wood Products, Except Furniture (52)
- Furniture And Fixtures (18)
- Paper And Allied Products (6)
- Printing, Publishing, And Allied Industries (155)
- Chemicals And Allied Products (30)
- Petroleum Refining And Related Industries (2)
- Rubber And Miscellaneous Plastics Products (17)
- Leather And Leather Products (4)
- Stone, Clay, Glass, And Concrete Products (28)
- Primary Metal Industries (7)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (41)
- Industrial And Commercial Machinery And Computer Equipment (64)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (43)
- Manufacturing (con't)
- Transportation Equipment (16)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (39)
- Miscellaneous Manufacturing Industries (88)
- Transportation & Utilities
- Railroad Transportation (3)
- Local And Suburban Transit And Interurban Highway Passenger Transportation (22)
- Motor Freight Transportation And Warehousing (147)
- United States Postal Service (1)
- Water Transportation (9)
- Transportation By Air (12)
- Transportation Services (87)
- Communications (141)
- Electric, Gas, And Sanitary Services (41)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (529)
- Wholesale Trade-non-durable Goods (247)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (171)
- General Merchandise Stores (28)
- Food Stores (194)
- Automotive Dealers And Gasoline Service Stations (185)
- Apparel And Accessory Stores (165)
- Home Furniture, Furnishings, And Equipment Stores (297)
- Eating And Drinking Places (565)
- Miscellaneous Retail (810)
- Finance, Insurance & Real Estate (con't)
- Real Estate (876)
- Holding And Other Investment Offices (389)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (71)
- Personal Services (600)
- Business Services (4096)
- Automotive Repair, Services, And Parking (289)
- Miscellaneous Repair Services (246)
- Motion Pictures (94)
- Amusement And Recreation Services (316)
- Health Services (974)
- Legal Services (217)
- Educational Services (254)
- Social Services (417)
- Museums, Art Galleries, And Botanical And Zoological Gardens (21)
- Membership Organizations (380)
- Engineering, Accounting, Research, Management, And Related Services (1345)
- Miscellaneous Services (250)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (48)
- Justice, Public Order, And Safety (31)
- Public Finance, Taxation, And Monetary Policy (4)
- Administration Of Human Resource Programs (16)
- Administration Of Environmental Quality And Housing Programs (26)
- Administration Of Economic Programs (26)
- National Security And International Affairs (6)
- Nonclassifiable Establishments (1517)