| 1 | 541710 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES | $75,671,446,539 | 5 |
| 2 | 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $16,337,626,237 | 91 |
| 3 | 541712 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT BIOTECHNOLOGY) | $3,716,580,274 | 10 |
| 4 | 621111 | OFFICES OF PHYSICIANS (EXCEPT MENTAL HEALTH SPECIALISTS) | $2,741,988,378 | 20 |
| 5 | 334511 | SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL, AND NAUTICAL SYSTEM AND INSTRUMENT MANUFACTURING | $2,295,138,078 | 8 |
| 6 | 561612 | SECURITY GUARDS AND PATROL SERVICES | $1,290,330,410 | 5 |
| 7 | 236220 | COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION | $728,652,218 | 25 |
| 8 | 561210 | FACILITIES SUPPORT SERVICES | $479,397,201 | 18 |
| 9 | 541330 | ENGINEERING SERVICES | $456,311,176 | 76 |
| 10 | 488190 | OTHER SUPPORT ACTIVITIES FOR AIR TRANSPORTATION | $336,476,743 | 5 |
| 11 | 334517 | IRRADIATION APPARATUS MANUFACTURING | $230,761,794 | 7 |
| 12 | 523920 | PORTFOLIO MANAGEMENT | $189,881,786 | 3 |
| 13 | 562910 | REMEDIATION SERVICES | $163,949,824 | 26 |
| 14 | 611519 | OTHER TECHNICAL AND TRADE SCHOOLS | $147,784,750 | 2 |
| 15 | 541512 | COMPUTER SYSTEMS DESIGN SERVICES | $136,277,325 | 4 |
| 16 | 221122 | ELECTRIC POWER DISTRIBUTION | $133,152,754 | 6 |
| 17 | 541519 | OTHER COMPUTER RELATED SERVICES | $130,163,982 | 44 |
| 18 | 334519 | OTHER MEASURING AND CONTROLLING DEVICE MANUFACTURING | $119,131,496 | 1 |
| 19 | 336411 | AIRCRAFT MANUFACTURING | $116,483,563 | 3 |
| 20 | 481212 | NONSCHEDULED CHARTERED FREIGHT AIR TRANSPORTATION | $115,774,074 | 1 |
| 21 | 237990 | OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION | $108,891,970 | 2 |
| 22 | 541310 | ARCHITECTURAL SERVICES | $98,029,661 | 7 |
| 23 | 541611 | ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES | $90,673,373 | 8 |
| 24 | 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $88,584,937 | 2 |
| 25 | 221320 | SEWAGE TREATMENT FACILITIES | $87,960,473 | 1 |
| 26 | 518210 | DATA PROCESSING, HOSTING, AND RELATED SERVICES | $83,856,181 | 4 |
| 27 | 541714 | RESEARCH AND DEVELOPMENT IN BIOTECHNOLOGY (EXCEPT NANOBIOTECHNOLOGY) | $71,656,053 | 5 |
| 28 | 336414 | GUIDED MISSILE AND SPACE VEHICLE MANUFACTURING | $45,195,550 | 2 |
| 29 | 926130 | REGULATION AND ADMINISTRATION OF COMMUNICATIONS, ELECTRIC, GAS, AND OTHER UTILITIES | $30,014,000 | 1 |
| 30 | 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $19,557,854 | 8 |
| 31 | 561720 | JANITORIAL SERVICES | $14,930,258 | 4 |
| 32 | 621498 | ALL OTHER OUTPATIENT CARE CENTERS | $14,110,942 | 1 |
| 33 | 541380 | TESTING LABORATORIES AND SERVICES | $11,990,925 | 13 |
| 34 | 541690 | OTHER SCIENTIFIC AND TECHNICAL CONSULTING SERVICES | $9,136,258 | 65 |
| 35 | 621999 | ALL OTHER MISCELLANEOUS AMBULATORY HEALTH CARE SERVICES | $6,991,502 | 1 |
| 36 | 811212 | COMPUTER AND OFFICE MACHINE REPAIR AND MAINTENANCE | $6,452,920 | 3 |
| 37 | 484210 | USED HOUSEHOLD AND OFFICE GOODS MOVING | $6,326,849 | 2 |
| 38 | 238210 | ELECTRICAL CONTRACTORS AND OTHER WIRING INSTALLATION CONTRACTORS | $5,630,749 | 1 |
| 39 | 621511 | MEDICAL LABORATORIES | $4,480,039 | 7 |
| 40 | 334220 | RADIO AND TELEVISION BROADCASTING AND WIRELESS COMMUNICATIONS EQUIPMENT MANUFACTURING | $3,980,942 | 1 |
| 41 | 492210 | LOCAL MESSENGERS AND LOCAL DELIVERY | $3,233,793 | 1 |
| 42 | 561320 | TEMPORARY HELP SERVICES | $3,052,653 | 3 |
| 43 | 336413 | OTHER AIRCRAFT PARTS AND AUXILIARY EQUIPMENT MANUFACTURING | $2,901,944 | 9 |
| 44 | 334516 | ANALYTICAL LABORATORY INSTRUMENT MANUFACTURING | $1,845,343 | 14 |
| 45 | 511210 | SOFTWARE PUBLISHERS | $1,508,551 | 6 |
| 46 | 541199 | ALL OTHER LEGAL SERVICES | $1,413,246 | 3 |
| 47 | 541620 | ENVIRONMENTAL CONSULTING SERVICES | $1,251,083 | 3 |
| 48 | 221310 | WATER SUPPLY AND IRRIGATION SYSTEMS | $1,105,884 | 4 |
| 49 | 541430 | GRAPHIC DESIGN SERVICES | $1,030,000 | 1 |
| 50 | 561621 | SECURITY SYSTEMS SERVICES (EXCEPT LOCKSMITHS) | $911,964 | 6 |
| 51 | 339112 | SURGICAL AND MEDICAL INSTRUMENT MANUFACTURING | $907,324 | 4 |
| 52 | 562111 | SOLID WASTE COLLECTION | $872,760 | 3 |
| 53 | 811213 | COMMUNICATION EQUIPMENT REPAIR AND MAINTENANCE | $757,358 | 1 |
| 54 | 541370 | SURVEYING AND MAPPING (EXCEPT GEOPHYSICAL) SERVICES | $714,963 | 2 |
| 55 | 561710 | EXTERMINATING AND PEST CONTROL SERVICES | $689,199 | 2 |
| 56 | 721110 | HOTELS (EXCEPT CASINO HOTELS) AND MOTELS | $587,007 | 1 |
| 57 | 541930 | TRANSLATION AND INTERPRETATION SERVICES | $499,869 | 4 |
| 58 | 541211 | OFFICES OF CERTIFIED PUBLIC ACCOUNTANTS | $441,459 | 1 |
| 59 | 811219 | OTHER ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE | $406,463 | 11 |
| 60 | 532420 | OFFICE MACHINERY AND EQUIPMENT RENTAL AND LEASING | $337,620 | 1 |
| 61 | 238220 | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS | $331,911 | 9 |
| 62 | 561730 | LANDSCAPING SERVICES | $319,440 | 1 |
| 63 | 561613 | ARMORED CAR SERVICES | $282,948 | 1 |
| 64 | 312113 | ICE MANUFACTURING | $262,345 | 1 |
| 65 | 238290 | OTHER BUILDING EQUIPMENT CONTRACTORS | $252,278 | 1 |
| 66 | 333517 | MACHINE TOOL MANUFACTURING | $231,822 | 1 |
| 67 | 333316 | PHOTOGRAPHIC AND PHOTOCOPYING EQUIPMENT MANUFACTURING | $216,343 | 3 |
| 68 | 517210 | WIRELESS TELECOMMUNICATIONS CARRIERS (EXCEPT SATELLITE) | $211,665 | 1 |
| 69 | 517919 | ALL OTHER TELECOMMUNICATIONS | $201,858 | 2 |
| 70 | 333613 | MECHANICAL POWER TRANSMISSION EQUIPMENT MANUFACTURING | $197,368 | 1 |
| 71 | 332613 | SPRING MANUFACTURING | $190,342 | 1 |
| 72 | 531110 | LESSORS OF RESIDENTIAL BUILDINGS AND DWELLINGS | $186,617 | 1 |
| 73 | 334510 | ELECTROMEDICAL AND ELECTROTHERAPEUTIC APPARATUS MANUFACTURING | $185,421 | 1 |
| 74 | 332322 | SHEET METAL WORK MANUFACTURING | $174,160 | 1 |
| 75 | 517311 | WIRED TELECOMMUNICATIONS CARRIERS | $172,297 | 2 |
| 76 | 541110 | OFFICES OF LAWYERS | $169,284 | 2 |
| 77 | 611710 | EDUCATIONAL SUPPORT SERVICES | $164,798 | 1 |
| 78 | 492110 | COURIERS AND EXPRESS DELIVERY SERVICES | $148,320 | 1 |
| 79 | 334419 | OTHER ELECTRONIC COMPONENT MANUFACTURING | $140,000 | 1 |
| 80 | 238990 | ALL OTHER SPECIALTY TRADE CONTRACTORS | $113,090 | 4 |
| 81 | 339999 | ALL OTHER MISCELLANEOUS MANUFACTURING | $108,639 | 2 |
| 82 | 334111 | ELECTRONIC COMPUTER MANUFACTURING | $97,701 | 1 |
| 83 | 339114 | DENTAL EQUIPMENT AND SUPPLIES MANUFACTURING | $68,938 | 1 |
| 84 | 325413 | IN-VITRO DIAGNOSTIC SUBSTANCE MANUFACTURING | $58,620 | 5 |
| 85 | 325414 | BIOLOGICAL PRODUCT (EXCEPT DIAGNOSTIC) MANUFACTURING | $55,455 | 3 |
| 86 | 541191 | TITLE ABSTRACT AND SETTLEMENT OFFICES | $55,000 | 1 |
| 87 | 611430 | PROFESSIONAL AND MANAGEMENT DEVELOPMENT TRAINING | $51,734 | 2 |
| 88 | 335911 | STORAGE BATTERY MANUFACTURING | $46,866 | 1 |
| 89 | 337127 | INSTITUTIONAL FURNITURE MANUFACTURING | $46,619 | 2 |
| 90 | 423830 | INDUSTRIAL MACHINERY AND EQUIPMENT MERCHANT WHOLESALERS | $31,452 | 1 |
| 91 | 334513 | INSTRUMENTS AND RELATED PRODUCTS MANUFACTURING FOR MEASURING, DISPLAYING, AND CONTROLLING INDUSTRIAL PROCESS VARIABLES | $30,080 | 1 |
| 92 | 532490 | OTHER COMMERCIAL AND INDUSTRIAL MACHINERY AND EQUIPMENT RENTAL AND LEASING | $30,000 | 2 |
| 93 | 325120 | INDUSTRIAL GAS MANUFACTURING | $29,332 | 2 |
| 94 | 336611 | SHIP BUILDING AND REPAIRING | $28,152 | 7 |
| 95 | 325998 | ALL OTHER MISCELLANEOUS CHEMICAL PRODUCT AND PREPARATION MANUFACTURING | $26,848 | 1 |
| 96 | 811192 | CAR WASHES | $26,811 | 1 |
| 97 | 324121 | ASPHALT PAVING MIXTURE AND BLOCK MANUFACTURING | $21,000 | 1 |
| 98 | 335311 | POWER, DISTRIBUTION, AND SPECIALTY TRANSFORMER MANUFACTURING | $20,894 | 1 |
| 99 | 324110 | PETROLEUM REFINERIES | $20,303 | 1 |
| 100 | 236118 | RESIDENTIAL REMODELERS | $18,850 | 1 |