| 1 | 524114 | Direct Health and Medical Insurance Carriers | $2.6B | 9 | — | |
| 2 | 236220 | Commercial and Institutional Building Construction | $2.3B | 288 | — | |
| 3 | 541519 | Other Computer Related Services | $1.3B | 935 | — | |
| 4 | 541611 | Administrative Management and General Management Consulting Services | $615.6M | 297 | — | |
| 5 | 541512 | Computer Systems Design Services | $484.5M | 114 | $7.2M | |
| 6 | 541511 | Custom Computer Programming Services | $396.9M | 148 | — | |
| 7 | 541715 | Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | $375.8M | 170 | — | |
| 8 | 483111 | Deep Sea Freight Transportation | $273.9M | 14 | — | |
| 9 | 541330 | Engineering Services | $195.5M | 146 | — | |
| 10 | 511210 | Software Publishers | $179.7M | 77 | — | |
| 11 | 561210 | Facilities Support Services | $170M | 281 | — | |
| 12 | 334111 | Electronic Computer Manufacturing | $162.8M | 128 | — | |
| 13 | 334516 | Analytical Laboratory Instrument Manufacturing | $160.9M | 622 | $124.6M | |
| 14 | 541990 | All Other Professional, Scientific, and Technical Services | $156.8M | 92 | $599.5K | |
| 15 | 541820 | Public Relations Agencies | $152.2M | 11 | — | |
| 16 | 325412 | Pharmaceutical Preparation Manufacturing | $146.9M | 117 | — | |
| 17 | 334112 | Computer Storage Device Manufacturing | $140.7M | 13 | — | |
| 18 | 621511 | Medical Laboratories | $125.5M | 109 | — | |
| 19 | 562910 | Remediation Services | $119.9M | 36 | $2.5M | |
| 20 | 541612 | Human Resources Consulting Services | $118.7M | 37 | — | |
| 21 | 541714 | Research and Development in Biotechnology (except Nanobiotechnology) | $117.7M | 20 | — | |
| 22 | 334517 | Irradiation Apparatus Manufacturing | $115.7M | 70 | — | |
| 23 | 513210 | Software Publishers | $109.8M | 90 | — | |
| 24 | 492110 | Couriers and Express Delivery Services | $108.4M | 119 | — | |
| 25 | 561499 | All Other Business Support Services | $108.2M | 18 | — | |
| 26 | 237310 | Highway, Street, and Bridge Construction | $95.4M | 46 | — | |
| 27 | 333415 | Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing | $90.7M | 34 | — | |
| 28 | 325998 | All Other Miscellaneous Chemical Product and Preparation Manufacturing | $88.5M | 9 | — | |
| 29 | 561612 | Security Guards and Patrol Services | $85.8M | 34 | — | |
| 30 | 238220 | Plumbing, Heating, and Air-Conditioning Contractors | $79.6M | 94 | — | |
| 31 | 336611 | Ship Building and Repairing | $77.1M | 37 | — | |
| 32 | 518210 | Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services | $74.3M | 54 | $2.9M | |
| 33 | 336111 | Description unavailable | $66.6M | 1,407 | $560.4K | |
| 34 | 339112 | Surgical and Medical Instrument Manufacturing | $66.1M | 169 | $23M | |
| 35 | 524292 | Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds | $64.9M | 7 | — | |
| 36 | 621498 | All Other Outpatient Care Centers | $64.4M | 30 | $64.4M | |
| 37 | 541620 | Environmental Consulting Services | $59.7M | 79 | — | |
| 38 | 541320 | Landscape Architectural Services | $59.3M | 8 | — | |
| 39 | 621910 | Ambulance Services | $58.6M | 42 | — | |
| 40 | 611310 | Colleges, Universities, and Professional Schools | $53.3M | 55 | — | |
| 41 | 237990 | Other Heavy and Civil Engineering Construction | $52.5M | 20 | — | |
| 42 | 541350 | Building Inspection Services | $50.9M | 10 | — | |
| 43 | 561320 | Temporary Help Services | $49.8M | 46 | — | |
| 44 | 327991 | Cut Stone and Stone Product Manufacturing | $47.2M | 23 | — | |
| 45 | 325414 | Biological Product (except Diagnostic) Manufacturing | $47M | 10 | — | |
| 46 | 541690 | Other Scientific and Technical Consulting Services | $46M | 56 | — | |
| 47 | 325413 | In-Vitro Diagnostic Substance Manufacturing | $44.6M | 185 | — | |
| 48 | 541618 | Other Management Consulting Services | $41.9M | 9 | — | |
| 49 | 334511 | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing | $39.7M | 52 | — | |
| 50 | 541513 | Computer Facilities Management Services | $37.1M | 16 | — | |