| 1 | 541710 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES | $15,566,647,803 | 2 |
| 2 | 541711 | RESEARCH AND DEVELOPMENT IN BIOTECHNOLOGY | $10,683,511,618 | 1 |
| 3 | 336414 | GUIDED MISSILE AND SPACE VEHICLE MANUFACTURING | $1,150,273,926 | 4 |
| 4 | 541712 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT BIOTECHNOLOGY) | $670,318,132 | 11 |
| 5 | 334511 | SEARCH, DETECTION, NAVIGATION, GUIDANCE, AERONAUTICAL, AND NAUTICAL SYSTEM AND INSTRUMENT MANUFACTURING | $478,985,183 | 1 |
| 6 | 541990 | ALL OTHER PROFESSIONAL, SCIENTIFIC, AND TECHNICAL SERVICES | $468,094,749 | 1 |
| 7 | 541715 | RESEARCH AND DEVELOPMENT IN THE PHYSICAL, ENGINEERING, AND LIFE SCIENCES (EXCEPT NANOTECHNOLOGY AND BIOTECHNOLOGY) | $449,267,031 | 9 |
| 8 | 541330 | ENGINEERING SERVICES | $99,382,538 | 19 |
| 9 | 541519 | OTHER COMPUTER RELATED SERVICES | $81,051,599 | 22 |
| 10 | 236220 | COMMERCIAL AND INSTITUTIONAL BUILDING CONSTRUCTION | $64,338,596 | 2 |
| 11 | 541720 | RESEARCH AND DEVELOPMENT IN THE SOCIAL SCIENCES AND HUMANITIES | $39,100,299 | 1 |
| 12 | 336419 | OTHER GUIDED MISSILE AND SPACE VEHICLE PARTS AND AUXILIARY EQUIPMENT MANUFACTURING | $37,239,061 | 1 |
| 13 | 561210 | FACILITIES SUPPORT SERVICES | $28,424,865 | 4 |
| 14 | 561612 | SECURITY GUARDS AND PATROL SERVICES | $27,098,755 | 4 |
| 15 | 541511 | CUSTOM COMPUTER PROGRAMMING SERVICES | $20,195,113 | 3 |
| 16 | 541513 | COMPUTER FACILITIES MANAGEMENT SERVICES | $13,129,095 | 1 |
| 17 | 562910 | REMEDIATION SERVICES | $11,652,409 | 2 |
| 18 | 541611 | ADMINISTRATIVE MANAGEMENT AND GENERAL MANAGEMENT CONSULTING SERVICES | $11,010,903 | 1 |
| 19 | 541199 | ALL OTHER LEGAL SERVICES | $6,742,603 | 4 |
| 20 | 611310 | COLLEGES, UNIVERSITIES, AND PROFESSIONAL SCHOOLS | $6,392,251 | 1 |
| 21 | 237990 | OTHER HEAVY AND CIVIL ENGINEERING CONSTRUCTION | $6,075,061 | 1 |
| 22 | 561621 | SECURITY SYSTEMS SERVICES (EXCEPT LOCKSMITHS) | $4,250,338 | 4 |
| 23 | 812930 | PARKING LOTS AND GARAGES | $4,040,700 | 2 |
| 24 | 511210 | SOFTWARE PUBLISHERS | $3,349,579 | 5 |
| 25 | 221122 | ELECTRIC POWER DISTRIBUTION | $3,201,784 | 3 |
| 26 | 335311 | POWER, DISTRIBUTION, AND SPECIALTY TRANSFORMER MANUFACTURING | $2,649,295 | 2 |
| 27 | 561110 | OFFICE ADMINISTRATIVE SERVICES | $2,465,326 | 2 |
| 28 | 333316 | PHOTOGRAPHIC AND PHOTOCOPYING EQUIPMENT MANUFACTURING | $2,132,529 | 2 |
| 29 | 517110 | WIRED TELECOMMUNICATIONS CARRIERS | $2,085,694 | 2 |
| 30 | 334111 | ELECTRONIC COMPUTER MANUFACTURING | $1,892,516 | 4 |
| 31 | 813920 | PROFESSIONAL ORGANIZATIONS | $1,795,460 | 2 |
| 32 | 237310 | HIGHWAY, STREET, AND BRIDGE CONSTRUCTION | $1,774,650 | 1 |
| 33 | 812320 | DRYCLEANING AND LAUNDRY SERVICES (EXCEPT COIN-OPERATED) | $1,629,852 | 1 |
| 34 | 623220 | RESIDENTIAL MENTAL HEALTH AND SUBSTANCE ABUSE FACILITIES | $1,610,956 | 1 |
| 35 | 519190 | ALL OTHER INFORMATION SERVICES | $994,669 | 1 |
| 36 | 541370 | SURVEYING AND MAPPING (EXCEPT GEOPHYSICAL) SERVICES | $762,584 | 1 |
| 37 | 238210 | ELECTRICAL CONTRACTORS AND OTHER WIRING INSTALLATION CONTRACTORS | $643,199 | 1 |
| 38 | 562991 | SEPTIC TANK AND RELATED SERVICES | $631,357 | 1 |
| 39 | 334516 | ANALYTICAL LABORATORY INSTRUMENT MANUFACTURING | $576,372 | 3 |
| 40 | 339116 | DENTAL LABORATORIES | $538,373 | 1 |
| 41 | 334290 | OTHER COMMUNICATIONS EQUIPMENT MANUFACTURING | $503,828 | 2 |
| 42 | 541714 | RESEARCH AND DEVELOPMENT IN BIOTECHNOLOGY (EXCEPT NANOBIOTECHNOLOGY) | $456,213 | 1 |
| 43 | 561410 | DOCUMENT PREPARATION SERVICES | $350,350 | 1 |
| 44 | 517410 | SATELLITE TELECOMMUNICATIONS | $321,041 | 1 |
| 45 | 562111 | SOLID WASTE COLLECTION | $293,968 | 3 |
| 46 | 621910 | AMBULANCE SERVICES | $283,136 | 1 |
| 47 | 561720 | JANITORIAL SERVICES | $190,379 | 3 |
| 48 | 541310 | ARCHITECTURAL SERVICES | $147,703 | 1 |
| 49 | 541690 | OTHER SCIENTIFIC AND TECHNICAL CONSULTING SERVICES | $136,884 | 2 |
| 50 | 332311 | PREFABRICATED METAL BUILDING AND COMPONENT MANUFACTURING | $117,851 | 1 |
| 51 | 561730 | LANDSCAPING SERVICES | $107,554 | 1 |
| 52 | 561492 | COURT REPORTING AND STENOTYPE SERVICES | $104,782 | 1 |
| 53 | 561990 | ALL OTHER SUPPORT SERVICES | $81,717 | 1 |
| 54 | 562211 | HAZARDOUS WASTE TREATMENT AND DISPOSAL | $55,317 | 1 |
| 55 | 517311 | WIRED TELECOMMUNICATIONS CARRIERS | $51,032 | 1 |
| 56 | 238220 | PLUMBING, HEATING, AND AIR-CONDITIONING CONTRACTORS | $48,676 | 1 |
| 57 | 813910 | BUSINESS ASSOCIATIONS | $43,050 | 1 |
| 58 | 326191 | PLASTICS PLUMBING FIXTURE MANUFACTURING | $41,873 | 1 |
| 59 | 334519 | OTHER MEASURING AND CONTROLLING DEVICE MANUFACTURING | $40,785 | 1 |
| 60 | 562112 | HAZARDOUS WASTE COLLECTION | $30,122 | 1 |
| 61 | 811219 | OTHER ELECTRONIC AND PRECISION EQUIPMENT REPAIR AND MAINTENANCE | $29,513 | 2 |
| 62 | 423490 | OTHER PROFESSIONAL EQUIPMENT AND SUPPLIES MERCHANT WHOLESALERS | $28,954 | 1 |
| 63 | 321219 | RECONSTITUTED WOOD PRODUCT MANUFACTURING | $14,425 | 1 |
| 64 | 339113 | SURGICAL APPLIANCE AND SUPPLIES MANUFACTURING | $12,395 | 1 |
| 65 | 541191 | TITLE ABSTRACT AND SETTLEMENT OFFICES | $11,115 | 1 |
| 66 | 532420 | OFFICE MACHINERY AND EQUIPMENT RENTAL AND LEASING | $10,568 | 1 |
| 67 | 337215 | SHOWCASE, PARTITION, SHELVING, AND LOCKER MANUFACTURING | $7,085 | 1 |