| 111 | Crop Production |
| 112 | Animal Production |
| 113 | Forestry and Logging |
| 114 | Fishing, Hunting and Trapping |
| 115 | Support Activities for Agriculture and Forestry |
| 211 | Oil and Gas Extraction |
| 212 | Mining (except Oil and Gas) |
| 213 | Support Activities for Mining |
| 221 | Utilities |
| 233 | Building, Developing and General Contracting |
| 234 | Heavy Construction |
| 235 | Special Trade Contractors |
| 311 | Food Manufacturing |
| 312 | Beverage and Tobacco Product Manufacturing |
| 313 | Textile Mills |
| 314 | Textile Product Mills |
| 315 | Apparel Manufacturing |
| 316 | Leather and Allied Product Manufacturing |
| 321 | Wood Product Manufacturing |
| 322 | Paper Manufacturing |
| 323 | Printing and Related Support Activities |
| 324 | Petroleum and Coal Products Manufacturing |
| 325 | Chemical Manufacturing |
| 326 | Plastics and Rubber Products Manufacturing |
| 327 | Nonmetallic Mineral Product Manufacturing |
| 331 | Primary Metal Manufacturing |
| 332 | Fabricated Metal Product Manufacturing |
| 333 | Machinery Manufacturing |
| 3331 | Agriculture, Construction, and Mining Machinery Manufacturing |
| 3332 | Industrial Machinery Manufacturing |
| 3333 | Commercial and Service Industry Machinery Manufacturing |
| 3334 | Ventilation, Heating, Air-Conditioning and Commerc |
| 3335 | Metalworking Machinery Manufacturing |
| 3336 | Engine, Turbine, and Power Transmission Equipment |
| 3339 | Other General Purpose Machinery Manufacturing |
| 334 | Computer and Electronic Product Manufacturing |
| 3341 | Computer and Peripheral Equipment Manufacturing |
| 3342 | Communications Equipment Manufacturing |
| 3344 | Semiconductor and Other Electronic Component Manufacturing |
| 335 | Electrical Equipment, Appliance and Component Manufacturing |
| 3353 | Electrical Equipment Manufacturing |
| 3359 | Other Electrical Equipment and Component Manufacturing |
| 336 | Transportation Equipment Manufacturing |
| 337 | Furniture and Related Product Manufacturing |
| 339 | Miscellaneous Manufacturing |
| 421 | Wholesale Trade, Durable Goods |
| 422 | Wholesale Trade, Nondurable Goods |
| 425 | Wholesale Electronic Markets and Agents and Brokers |
| 441 | Motor Vehicle and Parts Dealers |
| 442 | Furniture and Home Furnishings Stores |
| 443 | Electronics and Appliance Stores |
| 444 | Building Material and Garden Equipment and Supplies Stores |
| 445 | Food and Beverage Stores |
| 446 | Health and Personal Care Stores |
| 447 | Gasoline Stations |
| 448 | Clothing and Clothing Accessories Stores |
| 451 | Sporting Goods, Hobby, Book and Music Stores |
| 452 | General Merchandise Stores |
| 453 | Miscellaneous Store Retailers |
| 454 | Nonstore Retailers |
| 481 | Air Transportation |
| 482 | Rail Transportation |
| 483 | Water Transportation |
| 484 | Truck Transportation |
| 485 | Transit and Ground Passenger Transportation |
| 486 | Pipeline Transportation |
| 487 | Scenic and Sightseeing Transportation |
| 488 | Support Activities for Transportation |
| 491 | Postal Service |
| 492 | Couriers and Messengers |
| 493 | Warehousing and Storage Facilities |
| 511 | Publishing Industries |
| 512 | Motion Picture and Sound Recording Industries |
| 513 | Broadcasting and Telecommunications |
| 514 | Information Services and Data Processing Services |
| 521 | Monetary Authorities - Central Bank |
| 522 | Credit Intermediation and Related Activities |
| 5221 | Depository Credit Intermediation |
| 5222 | Non-Depository Credit Intermediation |
| 5223 | Activities Related to Credit Intermediation |
| 523 | Securities, Commodity Contracts and Other Intermediation |
| 5231 | Securities and Commodity Contracts Intermediation |
| 5232 | Securities and Commodity Exchanges |
| 5239 | Other Financial Investment Activities |
| 524 | Insurance Carriers and Related Activities |
| 525 | Funds, Trusts and Other Financial Vehicles (U.S. Organizations) |
| 5251 | Insurance and Employee Benefit Funds |
| 5259 | Other Investment Pools and Funds |
| 531 | Real Estate |
| 532 | Rental and Leasing Services |
| 533 | Owners and Lessors of Other Non-Financial Assets |
| 541 | Professional, Scientific and Technical Services |
| 551 | Management of Companies and Enterprises |
| 561 | Administrative and Support Services |
| 562 | Waste Management and Remediation Services |
| 611 | Educational Services |
| 621 | Ambulatory Health Care Services |
| 622 | Hospitals |
| 623 | Nursing and Residential Care Facilities |
| 624 | Social Assistance |
| 711 | Performing Arts, Spectator Sports and Related Industries |
| 712 | Museums, Historical Sites and Similar Institutions |
| 713 | Amusement, Gambling and Recreation Industries |
| 721 | Accommodation (hotels) |
| 722 | Foodservices and Drinking Places |
| 811 | Repair and Maintenance |
| 812 | Personal and Laundry Services |
| 813 | Religious, Grantmaking, Civic, and Professional and Similar Organizations |
| 814 | Private Households |
| 921 | Executive, Legislative, Public Finance and General |
| 922 | Justice, Public Order, and Safety |
| 923 | Administration of Human Resource Programs |
| 924 | Administration of Environmental Quality Programs |
| 925 | Administration of Housing Programs, Urban Planning |
| 926 | Administration of Economic Programs |
| 927 | Space Research and Technology |
| 928 | National Security and International Affairs |
| 999 | Unclassified Establishments |