The following are the top 10 companies on the 2004 Inc. 500
| Rank | Company | Location | Industry | Average Annual Sales Growth | 2003 Revenue |
| 1. | InPhonic, wireless service provider | Washington, D.C. | Telecommunications | 5,958% | $119.4 million |
| 2. | uSight, sells DIY software program to small and medium-size businesses | Orem, Utah | Software | 3,283% | $27.6 million |
| 3. | VCustomer, manages customer call centers in India for U.S. companies | Seattle | Business Services | 2,955% | $32.1 million |
| 4. | SeamlessWeb, food ordering service links businesses to network of restaurants online | New York City | Business Services | 2,608% | $29 million |
| 5. | Liquidnet, matches institutional buyers and sellers online | New York City | Financial Services | 2,602% | $50.3 million |
| 6. | METI, manages reengineering and technology projects for FAA and DOD | El Paso | Defense Contractors | 2,461% | $45.2 million |
| 7. | Sullivan International Group, offers variety of technical services to large utilities, municipalities, and the federal government | San Diego | Environmental Services | 1,977% | $16.2 million |
| 8. | Go Daddy Group, builds and registers websites | Scottsdale, Ariz. | IT Services | 1,882% | $40.8 million |
| 9. | Stentor, creates digital image-archiving systems for hospitals | Brisbane, Calif. | Health | 1,810% | $20.6 million |
| 10. | Coventry First, creates secondary market for insurance policies | Fort Washington, Pa. | Insurance | 1,675% | $268 million |
