- Agriculture, Forestry & Fishing
- Agricultural Production Crops (38)
- Agriculture production livestock and animal specialties (63)
- Agricultural Services (334)
- Forestry (11)
- Fishing, hunting, and trapping (4)
- Construction & Mining
- Metal Mining (56)
- Coal Mining (12)
- Oil And Gas Extraction (37)
- Mining And Quarrying Of Nonmetallic Minerals, Except Fuels (15)
- Building Construction General Contractors And Operative Builders (652)
- Heavy Construction Other Than Building Construction Contractors (58)
- Construction Special Trade Contractors (892)
- Manufacturing
- Food And Kindred Products (36)
- Textile Mill Products (4)
- Apparel And Other Finished Products Made From Fabrics And Similar Materials (34)
- Lumber And Wood Products, Except Furniture (47)
- Furniture And Fixtures (21)
- Paper And Allied Products (17)
- Printing, Publishing, And Allied Industries (180)
- Chemicals And Allied Products (52)
- Petroleum Refining And Related Industries (4)
- Rubber And Miscellaneous Plastics Products (31)
- Leather And Leather Products (3)
- Stone, Clay, Glass, And Concrete Products (29)
- Primary Metal Industries (10)
- Fabricated Metal Products, Except Machinery And Transportation Equipment (67)
- Industrial And Commercial Machinery And Computer Equipment (88)
- Manufacturing (con't)
- Electronic And Other Electrical Equipment And Components, Except Computer Equipment (63)
- Transportation Equipment (25)
- Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks (54)
- Miscellaneous Manufacturing Industries (131)
- Transportation & Utilities
- Railroad Transportation (4)
- Local And Suburban Transit And Interurban Highway Passenger Transportation (28)
- Motor Freight Transportation And Warehousing (271)
- United States Postal Service (9)
- Water Transportation (11)
- Transportation By Air (49)
- Transportation Services (176)
- Communications (235)
- Electric, Gas, And Sanitary Services (69)
- Retail & Wholesale Trade
- Wholesale Trade-durable Goods (720)
- Wholesale Trade-non-durable Goods (391)
- Building Materials, Hardware, Garden Supply, And Mobile Home Dealers (192)
- General Merchandise Stores (61)
- Food Stores (350)
- Automotive Dealers And Gasoline Service Stations (328)
- Apparel And Accessory Stores (269)
- Home Furniture, Furnishings, And Equipment Stores (360)
- Eating And Drinking Places (817)
- Miscellaneous Retail (1145)
- Finance, Insurance & Real Estate (con't)
- Insurance Agents, Brokers, And Service (363)
- Real Estate (1272)
- Holding And Other Investment Offices (705)
- Services
- Hotels, Rooming Houses, Camps, And Other Lodging Places (260)
- Personal Services (822)
- Business Services (4793)
- Automotive Repair, Services, And Parking (433)
- Miscellaneous Repair Services (425)
- Motion Pictures (139)
- Amusement And Recreation Services (431)
- Health Services (1282)
- Legal Services (500)
- Educational Services (315)
- Social Services (417)
- Museums, Art Galleries, And Botanical And Zoological Gardens (36)
- Membership Organizations (540)
- Engineering, Accounting, Research, Management, And Related Services (1846)
- Miscellaneous Services (302)
- Public Administration
- Executive, Legislative, And General Government, Except Finance (59)
- Justice, Public Order, And Safety (62)
- Public Finance, Taxation, And Monetary Policy (11)
- Administration Of Human Resource Programs (44)
- Administration Of Environmental Quality And Housing Programs (33)
- Administration Of Economic Programs (43)
- National Security And International Affairs (22)
- Nonclassifiable Establishments (3503)
