| 1 | 611519 | OTHER TECHNICAL AND TRADE SCHOOLS | $131,028,912 | 2 |
| 2 | 541330 | ENGINEERING SERVICES | $89,507,998 | 6 |
| 3 | 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $42,546,653 | 5 |
| 4 | 237990 | OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION | $34,337,010 | 2 |
| 5 | 561210 | FACILITIES SUPPORT SERVICES | $27,417,818 | 2 |
| 6 | 423610 | ELECTRICAL APPARATUS AND EQUIPMENT, WIRING SUPPLIES, AND RELATED EQUIPMENT MERCHANT WHOLESALERS | $15,804,953 | 1 |
| 7 | 336419 | OTHER GUIDED MISSILE AND SPACE VEHICLE PARTS AND AUXILIARY EQUIPMENT MANUFACTURING | $9,066,368 | 1 |
| 8 | 811111 | GENERAL AUTOMOTIVE REPAIR | $8,340,474 | 1 |
| 9 | 561720 | JANITORIAL SERVICES | $5,701,436 | 3 |
| 10 | 541420 | INDUSTRIAL DESIGN SERVICES | $5,456,731 | 1 |
| 11 | 541611 | ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES | $5,238,943 | 2 |
| 12 | 541380 | TESTING LABORATORIES AND SERVICES | $4,935,504 | 2 |
| 13 | 562910 | REMEDIATION SERVICES | $4,318,646 | 2 |
| 14 | 541310 | ARCHITECTURAL SERVICES | $3,345,531 | 5 |
| 15 | 511130 | BOOK PUBLISHERS | $1,406,412 | 2 |
| 16 | 334511 | SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL, AND NAUTICAL SYSTEM AND INSTRUMENT MANUFACTURING | $1,331,280 | 2 |
| 17 | 333911 | PUMP AND PUMPING EQUIPMENT MANUFACTURING | $1,230,796 | 2 |
| 18 | 315999 | OTHER APPAREL ACCESSORIES AND OTHER APPAREL MANUFACTURING | $1,111,662 | 1 |
| 19 | 315990 | APPAREL ACCESSORIES AND OTHER APPAREL MANUFACTURING | $1,104,237 | 1 |
| 20 | 541713 | RESEARCH AND DEVELOPMENT IN NANOTECHNOLOGY | $1,002,686 | 1 |
| 21 | 423710 | HARDWARE MERCHANT WHOLESALERS | $869,820 | 723 |
| 22 | 333413 | INDUSTRIAL AND COMMERCIAL FAN AND BLOWER AND AIR PURIFICATION EQUIPMENT MANUFACTURING | $687,263 | 1 |
| 23 | 221122 | ELECTRIC POWER DISTRIBUTION | $676,486 | 1 |
| 24 | 541219 | OTHER ACCOUNTING SERVICES | $354,450 | 1 |
| 25 | 221118 | OTHER ELECTRIC POWER GENERATION | $291,242 | 1 |
| 26 | 541612 | HUMAN RESOURCES CONSULTING SERVICES (2007), HUMAN RESOURCES AND EXECUTIVE SEARCH CONSULTING SERVICES (2002) | $234,281 | 1 |
| 27 | 221310 | WATER SUPPLY AND IRRIGATION SYSTEMS | $199,026 | 2 |
| 28 | 333318 | OTHER COMMERCIAL AND SERVICE INDUSTRY MACHINERY MANUFACTURING | $183,790 | 1 |
| 29 | 337214 | OFFICE FURNITURE (EXCEPT WOOD) MANUFACTURING | $175,247 | 6 |
| 30 | 926130 | REGULATION AND ADMINISTRATION OF COMMUNICATIONS, ELECTRIC, GAS, AND OTHER UTILITIES | $149,946 | 1 |
| 31 | 336413 | OTHER AIRCRAFT PARTS AND AUXILIARY EQUIPMENT MANUFACTURING | $130,661 | 1 |
| 32 | 541519 | OTHER COMPUTER RELATED SERVICES | $122,171 | 1 |
| 33 | 541690 | OTHER SCIENTIFIC AND TECHNICAL CONSULTING SERVICES | $120,000 | 2 |
| 34 | 336111 | AUTOMOBILE MANUFACTURING | $107,049 | 3 |
| 35 | 721110 | HOTELS (EXCEPT CASINO HOTELS) AND MOTELS | $78,971 | 1 |
| 36 | 333618 | OTHER ENGINE EQUIPMENT MANUFACTURING | $71,529 | 10 |
| 37 | 332618 | OTHER FABRICATED WIRE PRODUCT MANUFACTURING | $55,981 | 1 |
| 38 | 561611 | INVESTIGATION AND PERSONAL BACKGROUND CHECK SERVICES | $47,346 | 1 |
| 39 | 238330 | FLOORING CONTRACTORS | $46,879 | 3 |
| 40 | 561510 | TRAVEL AGENCIES | $45,543 | 2 |
| 41 | 713990 | ALL OTHER AMUSEMENT AND RECREATION INDUSTRIES | $38,000 | 1 |
| 42 | 541910 | MARKETING RESEARCH AND PUBLIC OPINION POLLING | $33,981 | 1 |
| 43 | 238990 | ALL OTHER SPECIALTY TRADE CONTRACTORS | $19,570 | 1 |
| 44 | 562219 | OTHER NONHAZARDOUS WASTE TREATMENT AND DISPOSAL | $18,000 | 1 |
| 45 | 326220 | RUBBER AND PLASTICS HOSES AND BELTING MANUFACTURING | $15,204 | 1 |
| 46 | 541350 | BUILDING INSPECTION SERVICES | $12,589 | 1 |
| 47 | 238320 | PAINTING AND WALL COVERING CONTRACTORS | $10,850 | 2 |
| 48 | 811490 | OTHER PERSONAL AND HOUSEHOLD GOODS REPAIR AND MAINTENANCE | $10,569 | 1 |
| 49 | 238350 | FINISH CARPENTRY CONTRACTORS | $10,275 | 1 |
| 50 | 238220 | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS | $5,615 | 1 |
| 51 | 238390 | OTHER BUILDING FINISHING CONTRACTORS | $4,590 | 1 |
| 52 | 238290 | OTHER BUILDING EQUIPMENT CONTRACTORS | $3,680 | 1 |
| 53 | 562111 | SOLID WASTE COLLECTION | $3,109 | 1 |
| 54 | 332994 | SMALL ARMS, ORDNANCE, AND ORDNANCE ACCESSORIES MANUFACTURING | $1,256 | 1 |
| 55 | 335999 | ALL OTHER MISCELLANEOUS ELECTRICAL EQUIPMENT AND COMPONENT MANUFACTURING | $1,196 | 1 |