- Agriculture, Forestry & Fishing
- Agricultural Production Crops (34)
- Agriculture production livestock and animal specialties (8)
- Agricultural Services (275)
- Forestry (10)
- Fishing, hunting, and trapping (11)
- Construction & Mining
- Oil And Gas Extraction (6)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (6)
- Building Construction General Contractors And Operative Builders (741)
- Heavy Construction Other Than Building Construction Contractors (70)
- Construction Special Trade Contractors (1207)
- Manufacturing
- Food And Kindred Products (27)
- Textile Mill Products (9)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (28)
- Lumber And Wood Products, Except Furniture (62)
- Furniture And Fixtures (15)
- Paper And Allied Products (6)
- Printing, Publishing, And Allied Industries (60)
- Chemicals And Allied Products (16)
- Petroleum Refining And Related Industries (5)
- Rubber And Miscellaneous Plastics Products (6)
- Leather And Leather Products (2)
- Stone, Clay, Glass, And Concrete Products (25)
- Primary Metal Industries (8)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (48)
- Industrial And Commercial Machinery And Computer Equipment (44)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (17)
- Manufacturing (con't)
- Transportation Equipment (42)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (21)
- Miscellaneous Manufacturing Industries (63)
- Transportation & Utilities
- Railroad Transportation (6)
- Local And Suburban Transit And Interurban Highway Passenger Transportation (29)
- Motor Freight Transportation And Warehousing (149)
- United States Postal Service (14)
- Water Transportation (68)
- Transportation By Air (26)
- Transportation Services (80)
- Communications (88)
- Electric, Gas, And Sanitary Services (37)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (428)
- Wholesale Trade-non-durable Goods (186)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (175)
- General Merchandise Stores (48)
- Food Stores (258)
- Automotive Dealers And Gasoline Service Stations (286)
- Apparel And Accessory Stores (206)
- Home Furniture, Furnishings, And Equipment Stores (253)
- Eating And Drinking Places (623)
- Miscellaneous Retail (733)
- Finance, Insurance & Real Estate (con't)
- Insurance Agents, Brokers, And Service (130)
- Real Estate (883)
- Holding And Other Investment Offices (193)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (244)
- Personal Services (517)
- Business Services (3015)
- Automotive Repair, Services, And Parking (336)
- Miscellaneous Repair Services (354)
- Motion Pictures (50)
- Amusement And Recreation Services (321)
- Health Services (568)
- Legal Services (155)
- Educational Services (141)
- Social Services (209)
- Museums, Art Galleries, And Botanical And Zoological Gardens (8)
- Membership Organizations (537)
- Engineering, Accounting, Research, Management, And Related Services (595)
- Miscellaneous Services (248)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (41)
- Justice, Public Order, And Safety (49)
- Public Finance, Taxation, And Monetary Policy (7)
- Administration Of Human Resource Programs (13)
- Administration Of Environmental Quality And Housing Programs (23)
- Administration Of Economic Programs (19)
- National Security And International Affairs (70)
- Nonclassifiable Establishments (1755)