| SIC code | SIC Text
| NAICS code | NAICS Text
|
| 0181 | Ornamental Floriculture and Nursery Products (nursery farming) | 111421 | Nursery and Tree Production |
| 0181 | Ornamental Floriculture and Nursery Products (floriculture farming) | 111422 | Floriculture Production |
| 1382 | Oil and Gas Field Exploration Services (except geophysical mapping and surveying) | 213112 | Support Activities for Oil and Gas Operations |
| 1389 | Oil and Gas Field Services, NEC | 213112 | Support Activities for Oil and Gas Operations |
| 1531 | Operative Builders (single family housing construction) | 233210 | Single Family Housing Construction |
| 1531 | Operative Builders (multi-family housing construction) | 233220 | Multifamily Housing Construction |
| 1531 | Operative Builders (manufacturing and light industrial building construction) | 233310 | Manufacturing and Industrial Building Construction |
| 1531 | Operative Builders (commercial and institutional building construction) | 233320 | Commercial and Institutional Building Construction |
| 3842 | Orthopedic, Prosthetic, and Surgical Appliances and Supplies (incontinent and bed pads) | 322291 | Sanitary Paper Product Manufacturing |
| 3489 | Ordnance and Accessories, NEC | 332995 | Other Ordnance and Accessories Manufacturing |
| 3533 | Oil and Gas Field Machinery and Equipment | 333132 | Oil and Gas Field Machinery and Equipment Manufacturing |
| 3579 | Office Machines, NEC (except timeclocks, time stamps, pencil sharpeners, stapling machines, etc.) | 333313 | Office Machinery Manufacturing |
| 3827 | Optical Instruments and Lenses | 333314 | Optical Instrument and Lens Manufacturing |
| 3536 | Overhead Traveling Cranes, Hoists, and Monorail Systems | 333923 | Overhead Traveling Crane, Hoist, and Monorail System Manufacturing |
| 3842 | Orthopedic, Prosthetic and Surgical Appliances and Supplies (electronic hearing aids) | 334510 | Electromedical and Electrotherapeutic Apparatus Manufacturing |
| 3579 | Office Machines, NEC (time clocks and other time recording devices) | 334518 | Watch, Clock, and Part Manufacturing |
| 2542 | Office and Store Fixtures, Partitions, Shelving, and Lockers, Except Wood (lunchroom tables and chairs (e | 337127 | Institutional Furniture Manufacturing |
| 2522 | Office Furniture, Except Wood | 337214 | Office Furniture (except Wood) Manufacturing |
| 2542 | Office and Store Fixtures, Partitions, Shelving and Lockers, Except Wood (except lunchroom tables and cha | 337215 | Showcase, Partition, Shelving, and Locker Manufacturing |
| 3842 | Orthopedic, Prosthetic, and Surgical Appliances and Supplies (except electronic hearing aids) | 339113 | Surgical Appliance and Supplies Manufacturing |
| 3851 | Ophthalmic Goods (intra ocular lenses) | 339113 | Surgical Appliance and Supplies Manufacturing |
| 3851 | Ophthalmic Goods (except intra ocular lenses) | 339115 | Ophthalmic Goods Manufacturing |
| 5995 | Optical Goods Stores (optical laboratories grinding of lenses to prescription) | 339115 | Ophthalmic Goods Manufacturing |
| 3579 | Office Machines, NEC (pencil sharpeners, staplers and other office equipment) | 339942 | Lead Pencil and Art Good Manufacturing |
| 5044 | Office Equipment (except sold via retail method) | 421420 | Office Equipment Wholesalers |
| 5048 | Ophthalmic Goods | 421460 | Ophthalmic Goods Wholesalers |
| 5995 | Optical Goods Stores (except labs grinding prescription lenses) | 446130 | Optical Goods Stores |
| 5044 | Office Equipment (sold via retail method) | 453210 | Office Supplies and Stationery Stores |
| 6792 | Oil Royalty Traders (investing on own account) | 523910 | Miscellaneous Intermediation |
| 6513 | Operators of Apartment Buildings | 531110 | Lessors of Residential Buildings and Dwellings |
| 6514 | Operators of Dwellings Other Than Apartment | 531110 | Lessors of Residential Buildings and Dwellings |
| 6512 | Operators of Nonresidential Buildings (other except stadium and arena owners) | 531120 | Lessors of Nonresidential Buildings (except Miniwarehouses) |
| 6515 | Operators of Residential Mobile Home Sites | 531190 | Lessors of Other Real Estate Property |
| 6792 | Oil Royalty Traders (except investors on own account) | 533110 | Lessors of Nonfinancial Intangible Assets (except Copyrighted Works) |
| 1382 | Oil and Gas Field Exploration Services (geophysical surveying and mapping) | 541360 | Geophysical Surveying and Mapping Services |
| 7312 | Outdoor Advertising Services | 541850 | Display Advertising |
| 6712 | Offices of Bank Holding Companies | 551111 | Offices of Bank Holding Companies |
| 6719 | Offices of Holding Companies, NEC | 551112 | Offices of Other Holding Companies |
| 0783 | Ornamental Shrub and Tree Services | 561730 | Landscaping Services |
| 8011 | Offices and Clinics of Doctors of Medicine (except mental health specialists) | 621111 | Offices of Physicians (except Mental Health Specialists) |
| 8031 | Offices and Clinics of Doctors of Osteopathy (except mental health specialists) | 621111 | Offices of Physicians (except Mental Health Specialists) |
| 8011 | Offices and Clinics of Doctors of Medicine (mental health specialists) | 621112 | Offices of Physicians, Mental Health Specialists |
| 8031 | Offices and Clinics of Doctors of Osteopathy (mental health specialists) | 621112 | Offices of Physicians, Mental Health Specialists |
| 8021 | Offices and Clinics of Dentists | 621210 | Offices of Dentists |
| 8041 | Offices and Clinics of Chiropractors | 621310 | Offices of Chiropractors |
| 8042 | Offices and Clinics of Optometrists | 621320 | Offices of Optometrists |
| 8049 | Offices and Clinics of Health Practitioners, NEC (mental health practitioners except physicians) | 621330 | Offices of Mental Health Practitioners (except Physicians) |
| 8049 | Offices and Clinics of Health Practitioners, NEC (physical, occupational, recreational and speech therapi | 621340 | Offices of Physical, Occupational and Speech Therapists, and Audiologists |
| 8043 | Offices and Clinics of Podiatrists | 621391 | Offices of Podiatrists |
| 8049 | Offices and Clinics of Health Practitioners, NEC (except mental health practitioners, physical, occupatio | 621399 | Offices of All Other Miscellaneous Health Practitioners |
| 8011 | Offices and Clinics of Doctors of Medicine (HMO Medical Centers) | 621491 | HMO Medical Centers |
| 8011 | Offices and Clinics of Doctors of Medicine (surgical and emergency centers) | 621493 | Freestanding Ambulatory Surgical and Emergency Centers |
| 6512 | Operators of Nonresidential Buildings (stadium and arena owners) | 711310 | Promoters of Performing Arts, Sports, and Similar Events with Facilities |
| 7041 | Organization Hotels and Lodging Houses, on Membership Basis (hotels) | 721110 | Hotels (except Casino Hotels) and Motels |
| 7041 | Organization Hotels and Lodging Houses, on Membership Basis (except hotels) | 721310 | Rooming and Boarding Houses |
