| Facilities Support Services | 561210 | $260,256,506,742 | 154 | 26 |
| Research and Development in the Physical, Engineering, and Life Sciences | 541710 | $177,365,047,088 | 11 | 10 |
| All Other Professional, Scientific, and Technical Services | 541990 | $28,834,379,359 | 38 | 26 |
| Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | 541715 | $28,436,490,243 | 14 | 12 |
| Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) | 541712 | $13,434,015,009 | 34 | 12 |
| Remediation Services | 562910 | $10,827,350,171 | 91 | 11 |
| Commercial and Institutional Building Construction | 236220 | $6,538,003,115 | 904 | 45 |
| Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing | 336415 | $4,430,894,439 | 14 | 10 |
| Optical Instrument and Lens Manufacturing | 333314 | $2,511,680,842 | 16 | 11 |
| Engineering Services | 541330 | $1,867,929,341 | 63 | 20 |
| Computer Systems Design Services | 541512 | $314,002,767 | 143 | 16 |
| Other Computer Related Services | 541519 | $262,751,458 | 236 | 22 |
| Deep Sea Freight Transportation | 483111 | $216,359,158 | 55 | 7 |
| Other Heavy and Civil Engineering Construction | 237990 | $183,141,622 | 153 | 15 |
| Janitorial Services | 561720 | $174,020,873 | 228 | 21 |
| Industrial Building Construction | 236210 | $95,830,428 | 69 | 17 |
| Petroleum Refineries | 324110 | $84,362,289 | 202 | 7 |
| Temporary Help Services | 561320 | $81,858,974 | 149 | 8 |
| Administrative Management and General Management Consulting Services | 541611 | $79,574,081 | 36 | 11 |
| Office Administrative Services | 561110 | $67,822,216 | 57 | 8 |
| Other Commercial and Service Industry Machinery Manufacturing | 333318 | $66,357,997 | 30 | 14 |
| General Automotive Repair | 811111 | $59,540,989 | 22 | 4 |
| Highway, Street, and Bridge Construction | 237310 | $54,913,432 | 57 | 15 |
| Custom Computer Programming Services | 541511 | $54,173,911 | 37 | 10 |
| All Other Support Services | 561990 | $49,799,174 | 140 | 9 |
| All Other Specialty Trade Contractors | 238990 | $47,805,023 | 168 | 38 |
| Other Building Equipment Contractors | 238290 | $44,227,699 | 35 | 12 |
| Hazardous Waste Treatment and Disposal | 562211 | $36,879,243 | 88 | 5 |
| Electrical Contractors and Other Wiring Installation Contractors | 238210 | $31,355,054 | 148 | 26 |
| All Other Miscellaneous Schools and Instruction | 611699 | $30,705,680 | 119 | 7 |
| Roofing Contractors | 238160 | $29,662,789 | 97 | 19 |
| Commercial Bakeries | 311812 | $28,925,882 | 57 | 2 |
| Water and Sewer Line and Related Structures Construction | 237110 | $28,161,053 | 25 | 12 |
| Other Nonhazardous Waste Treatment and Disposal | 562219 | $28,155,274 | 19 | 3 |
| Other Aircraft Parts and Auxiliary Equipment Manufacturing | 336413 | $27,968,104 | 438 | 67 |
| Security Guards and Patrol Services | 561612 | $24,797,536 | 36 | 6 |
| Plumbing, Heating, and Air-Conditioning Contractors | 238220 | $23,973,810 | 86 | 32 |
| Passenger Car Leasing | 532112 | $23,191,057 | 48 | 7 |
| Electronic Computer Manufacturing | 334111 | $21,495,732 | 77 | 18 |
| All Other Miscellaneous Manufacturing | 339999 | $21,215,838 | 325 | 48 |
| Security Systems Services (except Locksmiths) | 561621 | $20,228,698 | 63 | 19 |
| Specialized Freight (except Used Goods) Trucking, Local | 484220 | $18,439,316 | 33 | 6 |
| All Other Business Support Services | 561499 | $18,195,553 | 36 | 5 |
| Hardware Manufacturing | 332510 | $17,397,978 | 828 | 88 |
| Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing | 333924 | $17,236,808 | 109 | 12 |
| Software Publishers | 511210 | $16,661,462 | 41 | 12 |
| Other Commercial and Service Industry Machinery Manufacturing | 333319 | $16,495,918 | 15 | 6 |
| All Other Miscellaneous Electrical Equipment and Component Manufacturing | 335999 | $15,963,522 | 185 | 59 |
| Support Activities for Forestry | 115310 | $15,941,356 | 203 | 5 |
| Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing | 334220 | $15,858,479 | 121 | 38 |
| Bolt, Nut, Screw, Rivet, and Washer Manufacturing | 332722 | $15,018,853 | 1,017 | 74 |
| Landscaping Services | 561730 | $14,990,919 | 119 | 17 |
| All Other Miscellaneous Fabricated Metal Product Manufacturing | 332999 | $14,984,599 | 264 | 51 |
| Computer and Office Machine Repair and Maintenance | 811212 | $14,836,450 | 31 | 11 |
| All Other Miscellaneous Waste Management Services | 562998 | $14,350,343 | 54 | 5 |
| Office Furniture (except Wood) Manufacturing | 337214 | $13,252,340 | 128 | 15 |
| Other Fabricated Wire Product Manufacturing | 332618 | $12,195,954 | 208 | 40 |
| Motor and Generator Manufacturing | 335312 | $11,757,543 | 192 | 29 |
| Ball and Roller Bearing Manufacturing | 332991 | $11,656,074 | 287 | 44 |
| Translation and Interpretation Services | 541930 | $10,206,843 | 86 | 5 |