| 1 | 517310 | TELECOMMUNICATIONS RESELLERS | $3,331,005,778 | 9 |
| 2 | 541330 | ENGINEERING SERVICES | $2,549,122,627 | 53 |
| 3 | 541512 | COMPUTER SYSTEMS DESIGN SERVICES | $2,012,428,545 | 6 |
| 4 | 561210 | FACILITIES SUPPORT SERVICES | $625,418,509 | 2 |
| 5 | 488190 | OTHER SUPPORT ACTIVITIES FOR AIR TRANSPORTATION | $449,014,649 | 1 |
| 6 | 334220 | RADIO AND TELEVISION BROADCASTING AND WIRELESS COMMUNICATIONS EQUIPMENT MANUFACTURING | $367,302,065 | 3 |
| 7 | 541712 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT BIOTECHNOLOGY) | $285,584,371 | 1 |
| 8 | 336611 | SHIP BUILDING AND REPAIRING | $207,942,096 | 6 |
| 9 | 336413 | OTHER AIRCRAFT PARTS AND AUXILIARY EQUIPMENT MANUFACTURING | $185,936,973 | 4 |
| 10 | 236220 | COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION | $172,969,280 | 8 |
| 11 | 237990 | OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION | $155,260,549 | 1 |
| 12 | 221310 | WATER SUPPLY AND IRRIGATION SYSTEMS | $124,643,667 | 2 |
| 13 | 541611 | ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES | $67,870,065 | 5 |
| 14 | 236210 | INDUSTRIAL BUILDING CONSTRUCTION | $59,154,246 | 4 |
| 15 | 333318 | OTHER COMMERCIAL AND SERVICE INDUSTRY MACHINERY MANUFACTURING | $55,118,595 | 1 |
| 16 | 611519 | OTHER TECHNICAL AND TRADE SCHOOLS | $47,674,949 | 3 |
| 17 | 541350 | BUILDING INSPECTION SERVICES | $39,553,716 | 1 |
| 18 | 541620 | ENVIRONMENTAL CONSULTING SERVICES | $36,513,221 | 10 |
| 19 | 541310 | ARCHITECTURAL SERVICES | $26,682,104 | 3 |
| 20 | 221210 | NATURAL GAS DISTRIBUTION | $22,260,767 | 1 |
| 21 | 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $22,096,320 | 18 |
| 22 | 561720 | JANITORIAL SERVICES | $20,880,379 | 6 |
| 23 | 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $18,642,546 | 1 |
| 24 | 336414 | GUIDED MISSILE AND SPACE VEHICLE MANUFACTURING | $16,306,435 | 1 |
| 25 | 334511 | SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL, AND NAUTICAL SYSTEM AND INSTRUMENT MANUFACTURING | $13,685,240 | 4 |
| 26 | 221122 | ELECTRIC POWER DISTRIBUTION | $11,666,796 | 1 |
| 27 | 493190 | OTHER WAREHOUSING AND STORAGE | $8,568,711 | 1 |
| 28 | 336992 | MILITARY ARMORED VEHICLE, TANK, AND TANK COMPONENT MANUFACTURING | $7,490,556 | 1 |
| 29 | 518210 | DATA PROCESSING, HOSTING, AND RELATED SERVICES | $4,805,771 | 3 |
| 30 | 315210 | CUT AND SEW APPAREL CONTRACTORS | $4,665,320 | 1 |
| 31 | 237130 | POWER AND COMMUNICATION LINE AND RELATED STRUCTURES CONSTRUCTION | $4,149,408 | 2 |
| 32 | 561612 | SECURITY GUARDS AND PATROL SERVICES | $2,821,381 | 1 |
| 33 | 541370 | SURVEYING AND MAPPING (EXCEPT GEOPHYSICAL) SERVICES | $1,917,284 | 1 |
| 34 | 423450 | MEDICAL, DENTAL, AND HOSPITAL EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS | $1,845,978 | 1 |
| 35 | 541618 | OTHER MANAGEMENT CONSULTING SERVICES | $1,662,760 | 1 |
| 36 | 517410 | SATELLITE TELECOMMUNICATIONS | $1,659,893 | 1 |
| 37 | 811212 | COMPUTER AND OFFICE MACHINE REPAIR AND MAINTENANCE | $1,398,977 | 3 |
| 38 | 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $1,365,650 | 1 |
| 39 | 484210 | USED HOUSEHOLD AND OFFICE GOODS MOVING | $1,353,230 | 1 |
| 40 | 334517 | IRRADIATION APPARATUS MANUFACTURING | $1,259,247 | 1 |
| 41 | 541613 | MARKETING CONSULTING SERVICES | $1,154,006 | 1 |
| 42 | 611420 | COMPUTER TRAINING | $1,128,637 | 1 |
| 43 | 561499 | ALL OTHER BUSINESS SUPPORT SERVICES | $1,076,293 | 1 |
| 44 | 541110 | OFFICES OF LAWYERS | $1,015,140 | 2 |
| 45 | 517110 | WIRED TELECOMMUNICATIONS CARRIERS | $880,360 | 1 |
| 46 | 712190 | NATURE PARKS AND OTHER SIMILAR INSTITUTIONS | $818,340 | 1 |
| 47 | 327991 | CUT STONE AND STONE PRODUCT MANUFACTURING | $602,675 | 3 |
| 48 | 238290 | OTHER BUILDING EQUIPMENT CONTRACTORS | $569,259 | 5 |
| 49 | 926110 | ADMINISTRATION OF GENERAL ECONOMIC PROGRAMS | $556,781 | 1 |
| 50 | 721110 | HOTELS (EXCEPT CASINO HOTELS) AND MOTELS | $535,698 | 1 |
| 51 | 334419 | OTHER ELECTRONIC COMPONENT MANUFACTURING | $527,382 | 1 |
| 52 | 339999 | ALL OTHER MISCELLANEOUS MANUFACTURING | $441,750 | 1 |
| 53 | 443120 | COMPUTER AND SOFTWARE STORES | $353,837 | 2 |
| 54 | 511210 | SOFTWARE PUBLISHERS | $263,802 | 1 |
| 55 | 238220 | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS | $239,441 | 7 |
| 56 | 333244 | PRINTING MACHINERY AND EQUIPMENT MANUFACTURING | $222,149 | 1 |
| 57 | 532420 | OFFICE MACHINERY AND EQUIPMENT RENTAL AND LEASING | $210,342 | 2 |
| 58 | 562910 | REMEDIATION SERVICES | $202,330 | 2 |
| 59 | 562211 | HAZARDOUS WASTE TREATMENT AND DISPOSAL | $179,715 | 2 |
| 60 | 561611 | INVESTIGATION AND PERSONAL BACKGROUND CHECK SERVICES | $160,972 | 1 |
| 61 | 812930 | PARKING LOTS AND GARAGES | $153,329 | 2 |
| 62 | 541519 | OTHER COMPUTER RELATED SERVICES | $152,210 | 1 |
| 63 | 333924 | INDUSTRIAL TRUCK, TRACTOR, TRAILER, AND STACKER MACHINERY MANUFACTURING | $138,326 | 3 |
| 64 | 238330 | FLOORING CONTRACTORS | $137,402 | 6 |
| 65 | 334111 | ELECTRONIC COMPUTER MANUFACTURING | $134,155 | 3 |
| 66 | 611710 | EDUCATIONAL SUPPORT SERVICES | $80,493 | 2 |
| 67 | 511130 | BOOK PUBLISHERS | $66,498 | 2 |
| 68 | 541690 | OTHER SCIENTIFIC AND TECHNICAL CONSULTING SERVICES | $61,685 | 2 |
| 69 | 237110 | WATER AND SEWER LINE AND RELATED STRUCTURES CONSTRUCTION | $47,755 | 2 |
| 70 | 334290 | OTHER COMMUNICATIONS EQUIPMENT MANUFACTURING | $43,537 | 2 |
| 71 | 423840 | INDUSTRIAL SUPPLIES MERCHANT WHOLESALERS | $39,913 | 1 |
| 72 | 238310 | DRYWALL AND INSULATION CONTRACTORS | $38,900 | 2 |
| 73 | 238990 | ALL OTHER SPECIALTY TRADE CONTRACTORS | $36,453 | 3 |
| 74 | 332311 | PREFABRICATED METAL BUILDING AND COMPONENT MANUFACTURING | $36,385 | 1 |
| 75 | 335313 | SWITCHGEAR AND SWITCHBOARD APPARATUS MANUFACTURING | $36,107 | 3 |
| 76 | 517919 | ALL OTHER TELECOMMUNICATIONS | $34,764 | 1 |
| 77 | 334112 | COMPUTER STORAGE DEVICE MANUFACTURING | $34,124 | 1 |
| 78 | 332618 | OTHER FABRICATED WIRE PRODUCT MANUFACTURING | $31,878 | 1 |
| 79 | 337214 | OFFICE FURNITURE (EXCEPT WOOD) MANUFACTURING | $29,475 | 1 |
| 80 | 811219 | OTHER ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE | $29,100 | 1 |
| 81 | 561710 | EXTERMINATING AND PEST CONTROL SERVICES | $24,711 | 1 |
| 82 | 492110 | COURIERS AND EXPRESS DELIVERY SERVICES | $23,577 | 1 |
| 83 | 333412 | INDUSTRIAL AND COMMERCIAL FAN AND BLOWER MANUFACTURING | $22,301 | 1 |
| 84 | 541850 | OUTDOOR ADVERTISING | $19,050 | 1 |
| 85 | 335999 | ALL OTHER MISCELLANEOUS ELECTRICAL EQUIPMENT AND COMPONENT MANUFACTURING | $17,025 | 2 |
| 86 | 238190 | OTHER FOUNDATION, STRUCTURE, AND BUILDING EXTERIOR CONTRACTORS | $17,000 | 1 |
| 87 | 336212 | TRUCK TRAILER MANUFACTURING | $16,769 | 1 |
| 88 | 238390 | OTHER BUILDING FINISHING CONTRACTORS | $16,675 | 1 |
| 89 | 332812 | METAL COATING, ENGRAVING (EXCEPT JEWELRY AND SILVERWARE), AND ALLIED SERVICES TO MANUFACTURERS | $16,123 | 1 |
| 90 | 611310 | COLLEGES, UNIVERSITIES, AND PROFESSIONAL SCHOOLS | $15,748 | 1 |
| 91 | 339920 | SPORTING AND ATHLETIC GOODS MANUFACTURING | $15,632 | 1 |
| 92 | 332912 | FLUID POWER VALVE AND HOSE FITTING MANUFACTURING | $14,874 | 1 |
| 93 | 611430 | PROFESSIONAL AND MANAGEMENT DEVELOPMENT TRAINING | $14,805 | 1 |
| 94 | 562111 | SOLID WASTE COLLECTION | $14,460 | 1 |
| 95 | 423310 | LUMBER, PLYWOOD, MILLWORK, AND WOOD PANEL MERCHANT WHOLESALERS | $14,459 | 1 |
| 96 | 337110 | WOOD KITCHEN CABINET AND COUNTERTOP MANUFACTURING | $14,307 | 1 |
| 97 | 315999 | OTHER APPAREL ACCESSORIES AND OTHER APPAREL MANUFACTURING | $14,026 | 1 |
| 98 | 562998 | ALL OTHER MISCELLANEOUS WASTE MANAGEMENT SERVICES | $13,815 | 1 |
| 99 | 481111 | SCHEDULED PASSENGER AIR TRANSPORTATION | $13,100 | 1 |
| 100 | 333415 | AIR-CONDITIONING AND WARM AIR HEATING EQUIPMENT AND COMMERCIAL AND INDUSTRIAL REFRIGERATION EQUIPMENT MANUFACTURING | $12,635 | 1 |