| 1 | 541512 | COMPUTER SYSTEMS DESIGN SERVICES | $392,785,697 | 12 |
| 2 | 541519 | OTHER COMPUTER RELATED SERVICES | $185,365,474 | 31 |
| 3 | 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $70,917,064 | 5 |
| 4 | 561612 | SECURITY GUARDS AND PATROL SERVICES | $68,832,400 | 11 |
| 5 | 541330 | ENGINEERING SERVICES | $68,320,059 | 15 |
| 6 | 339999 | ALL OTHER MISCELLANEOUS MANUFACTURING | $50,095,287 | 164 |
| 7 | 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $36,498,397 | 3 |
| 8 | 541611 | ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES | $29,159,315 | 20 |
| 9 | 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $23,021,964 | 9 |
| 10 | 541612 | HUMAN RESOURCES CONSULTING SERVICES (2007), HUMAN RESOURCES AND EXECUTIVE SEARCH CONSULTING SERVICES (2002) | $20,639,592 | 2 |
| 11 | 332999 | ALL OTHER MISCELLANEOUS FABRICATED METAL PRODUCT MANUFACTURING | $20,289,623 | 3 |
| 12 | 236220 | COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION | $15,621,812 | 5 |
| 13 | 511210 | SOFTWARE PUBLISHERS | $9,221,842 | 20 |
| 14 | 423850 | SERVICE ESTABLISHMENT EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS | $9,163,746 | 8 |
| 15 | 541618 | OTHER MANAGEMENT CONSULTING SERVICES | $5,368,432 | 2 |
| 16 | 518210 | DATA PROCESSING, HOSTING, AND RELATED SERVICES | $5,172,660 | 3 |
| 17 | 483111 | DEEP SEA FREIGHT TRANSPORTATION | $4,338,315 | 4 |
| 18 | 811121 | AUTOMOTIVE BODY, PAINT, AND INTERIOR REPAIR AND MAINTENANCE | $3,816,917 | 1 |
| 19 | 541199 | ALL OTHER LEGAL SERVICES | $3,571,909 | 4 |
| 20 | 561990 | ALL OTHER SUPPORT SERVICES | $3,560,928 | 1 |
| 21 | 611430 | PROFESSIONAL AND MANAGEMENT DEVELOPMENT TRAINING | $3,266,009 | 1 |
| 22 | 561720 | JANITORIAL SERVICES | $2,737,193 | 2 |
| 23 | 316210 | FOOTWEAR MANUFACTURING | $2,592,480 | 1 |
| 24 | 561210 | FACILITIES SUPPORT SERVICES | $1,986,966 | 9 |
| 25 | 561410 | DOCUMENT PREPARATION SERVICES | $1,930,657 | 1 |
| 26 | 541620 | ENVIRONMENTAL CONSULTING SERVICES | $1,738,636 | 4 |
| 27 | 423450 | MEDICAL, DENTAL, AND HOSPITAL EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS | $1,669,124 | 69 |
| 28 | 532420 | OFFICE MACHINERY AND EQUIPMENT RENTAL AND LEASING | $1,330,469 | 1 |
| 29 | 221118 | OTHER ELECTRIC POWER GENERATION | $1,075,657 | 1 |
| 30 | 335313 | SWITCHGEAR AND SWITCHBOARD APPARATUS MANUFACTURING | $1,053,282 | 2 |
| 31 | 541310 | ARCHITECTURAL SERVICES | $940,688 | 2 |
| 32 | 541930 | TRANSLATION AND INTERPRETATION SERVICES | $756,134 | 2 |
| 33 | 315210 | CUT AND SEW APPAREL CONTRACTORS | $636,090 | 1 |
| 34 | 541211 | OFFICES OF CERTIFIED PUBLIC ACCOUNTANTS | $564,533 | 1 |
| 35 | 334516 | ANALYTICAL LABORATORY INSTRUMENT MANUFACTURING | $564,375 | 5 |
| 36 | 541614 | PROCESS, PHYSICAL DISTRIBUTION, AND LOGISTICS CONSULTING SERVICES | $509,862 | 1 |
| 37 | 333618 | OTHER ENGINE EQUIPMENT MANUFACTURING | $494,861 | 3 |
| 38 | 238910 | SITE PREPARATION CONTRACTORS | $329,484 | 1 |
| 39 | 561790 | OTHER SERVICES TO BUILDINGS AND DWELLINGS | $317,710 | 1 |
| 40 | 238140 | MASONRY CONTRACTORS | $314,438 | 1 |
| 41 | 325413 | IN-VITRO DIAGNOSTIC SUBSTANCE MANUFACTURING | $297,082 | 1 |
| 42 | 212319 | OTHER CRUSHED AND BROKEN STONE MINING AND QUARRYING | $266,967 | 1 |
| 43 | 423410 | PHOTOGRAPHIC EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS | $242,326 | 1 |
| 44 | 337214 | OFFICE FURNITURE (EXCEPT WOOD) MANUFACTURING | $238,803 | 3 |
| 45 | 517410 | SATELLITE TELECOMMUNICATIONS | $237,769 | 1 |
| 46 | 334220 | RADIO AND TELEVISION BROADCASTING AND WIRELESS COMMUNICATIONS EQUIPMENT MANUFACTURING | $193,954 | 3 |
| 47 | 335139 | ELECTRIC LAMP BULB AND OTHER LIGHTING EQUIPMENT MANUFACTURING | $193,945 | 1 |
| 48 | 621420 | OUTPATIENT MENTAL HEALTH AND SUBSTANCE ABUSE CENTERS | $192,490 | 2 |
| 49 | 336611 | SHIP BUILDING AND REPAIRING | $189,687 | 1 |
| 50 | 811219 | OTHER ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE | $180,442 | 1 |
| 51 | 334111 | ELECTRONIC COMPUTER MANUFACTURING | $179,425 | 4 |
| 52 | 811198 | ALL OTHER AUTOMOTIVE REPAIR AND MAINTENANCE | $134,050 | 1 |
| 53 | 513210 | SOFTWARE PUBLISHERS | $119,058 | 1 |
| 54 | 561730 | LANDSCAPING SERVICES | $117,800 | 2 |
| 55 | 339920 | SPORTING AND ATHLETIC GOODS MANUFACTURING | $111,000 | 1 |
| 56 | 326199 | ALL OTHER PLASTICS PRODUCT MANUFACTURING | $90,000 | 1 |
| 57 | 323113 | COMMERCIAL SCREEN PRINTING | $87,587 | 2 |
| 58 | 517121 | TELECOMMUNICATIONS RESELLERS | $78,460 | 1 |
| 59 | 335999 | ALL OTHER MISCELLANEOUS ELECTRICAL EQUIPMENT AND COMPONENT MANUFACTURING | $63,128 | 2 |
| 60 | 238390 | OTHER BUILDING FINISHING CONTRACTORS | $48,744 | 1 |
| 61 | 334412 | BARE PRINTED CIRCUIT BOARD MANUFACTURING | $40,416 | 1 |
| 62 | 334419 | OTHER ELECTRONIC COMPONENT MANUFACTURING | $37,755 | 1 |
| 63 | 811111 | GENERAL AUTOMOTIVE REPAIR | $25,398 | 1 |
| 64 | 517911 | TELECOMMUNICATIONS RESELLERS | $22,444 | 1 |
| 65 | 335312 | MOTOR AND GENERATOR MANUFACTURING | $22,088 | 2 |
| 66 | 337122 | NONUPHOLSTERED WOOD HOUSEHOLD FURNITURE MANUFACTURING | $20,803 | 1 |
| 67 | 541360 | GEOPHYSICAL SURVEYING AND MAPPING SERVICES | $18,695 | 1 |
| 68 | 321215 | ENGINEERED WOOD MEMBER MANUFACTURING | $14,608 | 1 |
| 69 | 711510 | INDEPENDENT ARTISTS, WRITERS, AND PERFORMERS | $14,500 | 1 |
| 70 | 812320 | DRYCLEANING AND LAUNDRY SERVICES (EXCEPT COIN-OPERATED) | $14,242 | 1 |
| 71 | 532490 | OTHER COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT RENTAL AND LEASING | $12,999 | 1 |
| 72 | 511120 | PERIODICAL PUBLISHERS | $6,360 | 1 |
| 73 | 492110 | COURIERS AND EXPRESS DELIVERY SERVICES | $5,000 | 1 |
| 74 | 332722 | BOLT, NUT, SCREW, RIVET, AND WASHER MANUFACTURING | $3,444 | 1 |
| 75 | 922160 | FIRE PROTECTION | $3,380 | 1 |