| 541370 | 54137 | Surveying and Mapping (except Geophysical) Services | 96252 | Mapping Including Cartography and Surveying Services, Not Aerial) (See 920-33 for Digitized Mapping Services) |
| 541360 | 54136 | Geophysical Surveying and Mapping Services | 96174 | Scientist Services (Geology, Geophysics, etc.) |
| 423430 | 42343 | Computer and Computer Peripheral Equipment and Software Merchant Wholesalers | 20400 | COMPUTER HARDWARE AND PERIPHERALS FOR MICROCOMPUTERS |
| 423430 | 42343 | Computer and Computer Peripheral Equipment and Software Merchant Wholesalers | 20600 | COMPUTER HARDWARE AND PERIPHERALS FOR MINI AND MAIN FRAME COMPUTERS |
| 423430 | 42343 | Computer and Computer Peripheral Equipment and Software Merchant Wholesalers | 20800 | COMPUTER SOFTWARE FOR MICROCOMPUTERS (PREPROGRAMMED) |
| 423430 | 42343 | Computer and Computer Peripheral Equipment and Software Merchant Wholesalers | 20900 | COMPUTER SOFTWARE FOR MINI AND MAINFRAME COMPUTERS (PREPROGRAMMED) |
| 423440 | 42344 | Other Commercial Equipment Merchant Wholesalers | 54529 | Industrial Commercial and Professional Equipment |
| 518210 | 51821 | Data Processing, Hosting, and Related Services | 92022 | Data Preparation and Processing Services |
| 519120 | 51912 | Libraries and Archives | 95638 | Library Services (Not Otherwise Classified) |
| 519190 | 51919 | All Other Information Services | 91573 | Public Information Services (Incl. Press Releases) |
| 541330 | 54133 | Engineering Services | 92533 | Engineer Services, Professional |
| 541340 | 54134 | Drafting Services | 90738 | Drafting Services |
| 541511 | 541511 | Custom Computer Programming Services | 92040 | Programming Services, Computer |
| 541512 | 541512 | Computer Systems Design Services | 92040 | Programming Services, Computer |
| 541513 | 541513 | Computer Facilities Management Services | 92029 | Facilities Management Services, Computer |
| 541519 | 541519 | Other Computer Related Services | 92000 | DATA PROCESSING, COMPUTER, PROGRAMMING, AND SOFTWARE SERVICES |
| 541600 | 5416 | Management, Scientific, and Technical Consulting Services | 91875 | Management Consulting |
| 541610 | 54161 | Management Consulting Services | 91875 | Management Consulting |
| 541611 | 541611 | Administrative Management and General Management Consulting Services | 91875 | Management Consulting |
| 541618 | 541618 | Other Management Consulting Services | 91875 | Management Consulting |
| 541620 | 54162 | Environmental Consulting Services | 91843 | Environmental Consulting |
| 541690 | 54169 | Other Scientific and Technical Consulting Services | 91832 | Consulting Services (Not Otherwise Classified) |
| 541710 | 54171 | Research and Development in the Physical, Engineering, and Life Sciences | 95670 | Research Services (Other Than Business) |
| 541720 | 54172 | Research and Development in the Social Sciences and Humanities | 95670 | Research Services (Other Than Business) |
| 541990 | 54199 | All Other Professional, Scientific, and Technical Services | 96258 | Professional Services (Not Otherwise Classified) |
| 551110 | 55111 | Management of Companies and Enterprises | 95816 | Business Management Services |
| 561320 | 56132 | Temporary Help Services | 96269 | Personnel Services, Temporary |
| 561499 | 561499 | All Other Business Support Services | 95816 | Business Management Services |
| 561990 | 56199 | All Other Support Services | 96102 | Administrative Services, All Kinds (Incl. Clerical, Secretarial Services, etc.) |
| 611420 | 61142 | Computer Training | 92091 | Training, Computer Based (Software Supported) |
