| 423450 | Medical, Dental, and Hospital Equipment and Supplies Merchant Wholesalers | 161,871 | $1,791,644,121 |
| 311991 | Perishable Prepared Food Manufacturing | 136,080 | $503,053,317 |
| 424210 | Drugs and Druggists' Sundries Merchant Wholesalers | 94,454 | $701,133,659 |
| 444110 | Home Centers | 82,606 | $224,105,579 |
| 423850 | Service Establishment Equipment and Supplies Merchant Wholesalers | 70,502 | $2,356,204,641 |
| 339940 | Office Supplies (except Paper) Manufacturing | 58,435 | $101,356,136 |
| 311812 | Commercial Bakeries | 55,789 | $171,598,355 |
| 324110 | Petroleum Refineries | 54,006 | $3,639,914,796 |
| 453210 | Office Supplies and Stationery Stores | 53,888 | $41,375,045 |
| 332216 | Saw Blade and Handtool Manufacturing | 53,763 | $100,599,978 |
| 322230 | Stationery Product Manufacturing | 47,905 | $48,549,080 |
| 423710 | Hardware Merchant Wholesalers | 36,798 | $32,824,438 |
| 493190 | Other Warehousing and Storage | 32,926 | $1,432,411,133 |
| 324191 | Petroleum Lubricating Oil and Grease Manufacturing | 32,270 | $54,921,800 |
| 325411 | Medicinal and Botanical Manufacturing | 29,174 | $1,137,170,879 |
| 332510 | Hardware Manufacturing | 28,196 | $222,985,267 |
| 332722 | Bolt, Nut, Screw, Rivet, and Washer Manufacturing | 27,549 | $110,278,279 |
| 325520 | Adhesive Manufacturing | 26,336 | $24,656,762 |
| 336111 | Automobile Manufacturing | 24,163 | $1,135,209,425 |
| 541519 | Other Computer Related Services | 24,123 | $59,923,565,037 |
| 444130 | Hardware Stores | 23,328 | $58,052,898 |
| 336413 | Other Aircraft Parts and Auxiliary Equipment Manufacturing | 18,198 | $43,725,695,036 |
| 541330 | Engineering Services | 16,504 | $233,584,093,341 |
| 311999 | All Other Miscellaneous Food Manufacturing | 15,715 | $894,824,646 |
| 337214 | Office Furniture (except Wood) Manufacturing | 14,371 | $501,576,493 |
| 115310 | Support Activities for Forestry | 14,174 | $1,471,903,152 |
| 423840 | Industrial Supplies Merchant Wholesalers | 12,243 | $13,828,966 |
| 561210 | Facilities Support Services | 11,912 | $399,056,432,938 |
| 541611 | Administrative Management and General Management Consulting Services | 11,827 | $36,205,166,868 |
| 236220 | Commercial and Institutional Building Construction | 11,747 | $121,585,202,212 |
| 333618 | Other Engine Equipment Manufacturing | 11,338 | $932,339,645 |
| 541512 | Computer Systems Design Services | 10,868 | $122,214,967,572 |
| 541715 | Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | 10,090 | $189,861,881,295 |
| 311911 | Roasted Nuts and Peanut Butter Manufacturing | 8,796 | $59,158,589 |
| 339113 | Surgical Appliance and Supplies Manufacturing | 8,477 | $959,185,978 |
| 335912 | Primary Battery Manufacturing | 7,282 | $19,050,419 |
| 334111 | Electronic Computer Manufacturing | 7,270 | $5,004,586,937 |
| 325412 | Pharmaceutical Preparation Manufacturing | 6,753 | $22,817,390,059 |
| 326140 | Polystyrene Foam Product Manufacturing | 6,617 | $9,288,894 |
| 325611 | Soap and Other Detergent Manufacturing | 6,432 | $15,722,952 |
| 541511 | Custom Computer Programming Services | 6,256 | $32,958,476,554 |
| 541990 | All Other Professional, Scientific, and Technical Services | 5,996 | $59,950,278,227 |
| 332999 | All Other Miscellaneous Fabricated Metal Product Manufacturing | 5,936 | $866,009,943 |
| 334516 | Analytical Laboratory Instrument Manufacturing | 5,899 | $1,374,341,524 |
| 339999 | All Other Miscellaneous Manufacturing | 5,884 | $1,910,877,604 |
| 423610 | Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers | 5,613 | $127,540,977 |
| 339112 | Surgical and Medical Instrument Manufacturing | 5,610 | $1,273,563,985 |
| 811210 | Electronic and Precision Equipment Repair and Maintenance | 5,557 | $3,337,989,599 |
| 326111 | Plastics Bag and Pouch Manufacturing | 5,438 | $21,075,456 |
| 332994 | Small Arms, Ordnance, and Ordnance Accessories Manufacturing | 5,096 | $4,687,054,580 |