| Rank | Company | Revenue
(in mil.) | Employees
| Industry |
| 1 | Federal National Mortgage Association | $50,803 | 4,500 | Mortgage |
| 2 | Federal Home Loan Mortgage Corp. | 36,173 | 3,995 | Mortgage |
| 3 | Lockheed Martin Corp. | 23,990 | 14,000 | Defense |
| 4 | General Dynamics Corp. | 12,163 | 1,600 | Defense |
| 5 | Marriott International Inc. | 10,152 | 14,719 | Hospitality |
| 6 | AES Corp. | 9,327 | 80 | Energy |
| 7 | US Airways Group Inc. | 8,288 | 2,181 | Airline |
| 8 | Nextel Communications Inc. | 7,689 | 2,000 | Wireless
telecommunications |
| 9 | Capital One Financial Corp. | 7,254.3 | 2,000 | Financial |
| 10 | Gannett Co. | 6,344.2 | 2,765 | Media |
| 11 | Danaher Corp. | 3,782.4 | 530 | Manufacturing |
| 12 | Host Marriott Corp. | 3,754 | 772 | hospitality |
| 13 | USA Education Inc. | 3,515.1 | 1,241 | Education |
| 14 | Lafarge North America Inc. | 3,323 | 400 | Manufacturing |
| 15 | Coventry Health Care Inc. | 3,147.2 | 218 | Health care |
| 16 | KPMG Consulting Inc,. | 2,855.8 | 850 | Systems integrator |
| 17 | NVR Inc. | 2,559.7 | 125 | Financial |
| 18 | Potomac Electric Power Co. | 2,502.9 | 80 | Energy |
| 19 | The Washington Post Co. | 2,416.7 | 12,300 | Media |
| 20 | WGL Holdings Inc. | 1,939.5 | 20 | Energy |
| 21 | Mid Atlantic Medical Services Inc. | 1,807.7 | 25 | Health care |
| 22 | W.R. Grace & Co. | 1,757 | 20 | Manufacturing |
| 23 | Magellan Health Services Inc. | 1,755.5 | 96 | Health care |
| 24 | Harman International Industries Inc. | 1,716.5 | 10,676 | Manufacturing |
| 25 | Ciena Corp. | 1,603.2 | 2,275 | Telecom equipment |
| 26 | United Defense Industries Inc. | 1,318.5 | 5,300 | Defense |
| 27 | XO Communications Inc. | 1,258.6 | 6,700 | Telecommunications |
| 28 | American Management Systems Inc. | 1,183.3 | 7,000 | IT consulting |
| 29 | Acterna Corp. | 1,167.8 | 5,000 | Communications testing |
| 30 | USEC Inc. | 1,143.9 | 3,100 | Energy |
| 31 | MeriStar Hospitality Corp. | 1,084.9 | 30 | Lodging |
| 32 | Primus Telecommunications Group Inc. | 1,082.5 | 2,200 | Telecommunications |
| 33 | Rouse Co. | 1,058.8 | 3,396 | Real estate
investment trust |
| 34 | GTSI Inc. | 783.5 | 608 | Government
systems contractor |
| 35 | Anteon International Corp. | 715 | 5,400 | Systems integration |
| 36 | Watson Wyatt & Co. Holdings | 700.2 | 6,200 | Human resources consulting |
| 37 | Avalonbay Communities Inc. | 641.7 | 1,695 | Real estate
investment trust |
| 38 | Fairchild Corp. | 622.8 | 5,500 | Manufacturing |
| 39 | MedImmune Inc. | 618.7 | 1,435 | Biotechnology |
| 40 | Atlantic Coast Airlines Holdings Inc. | 583.4 | 3,601 | Airline |
| 41 | CACI International Inc. | 563.8 | 5,550 | Information technology |
| 42 | CarrAmerica Realty Corp. | 538.6 | 801 | Real estate
investment trust |
| 43 | Crestline Capital Corp. | 508.2 | 3,677 | Lodging |
| 44 | Hanger Orthopedic Group Inc. | 508.1 | 3,034 | Health care |
| 45 | Metrocall Inc. | 503.7 | 2,976 | Telecommunications |
| 46 | TalkAmerica Holdings Inc. | 495.5 | 1,178 | Telecommunications |
| 47 | Maximus Inc. | 487.3 | 4,825 | Government services |
| 48 | ManTech International Corp. | 431.4 | 3,513 | Government technology services |
| 49 | Sunrise Assisted Living Inc. | 428.2 | 12,003 | Assisted-living provider |
| 50 | Orbital Sciences Corp. | 415.2 | 1,800 | Launch vehicle
and satellite systems |
| 51 | Choice Hotels International Inc. | 341.4 | 1,446 | Hotel franchising |
| 52 | Rowe Cos. | 325.4 | 3,048 | Manufacturing |
| 53 | Micros Systems Inc. | 325.4 | 2,400 | Hospitality IT |
| 54 | Manugistics Group Inc. | 310.1 | 1,400 | Supply-chain management |
| 55 | EPlus Inc. | 306.6 | 457 | Supply-chain management |
| 56 | MeriStar Hotels & Resorts Inc. | 305.9 | 20,737 | Hotel management |
| 57 | Federal Realty Investment Trust | 300.5 | 460 | Real estate
investment trust |
| 58 | Allied Capital Corp. | 289.1 | 97 | Financial |
| 59 | Duratek Inc. | 282.2 | 1,390 | Waste treatment |
| 60 | Radio One Inc. | 276.9 | 1,550 | Radio broadcasting |
| 61 | Fortress Group Inc. | 260 | 322 | Home building |
| 62 | Savvis Communications Corp. | 242.8 | 566 | Internet service provider |
| 63 | Startec Global Communications Corp. | 222 | 401 | Telecommunications |
| 64 | Digex Inc. | 214.4 | 1,393 | Web hosting |
| 65 | WebMethods Inc. | 207 | 902 | Integration software |
| 66 | Federal Agricultural Mortgage Corp. | 196.9 | 31 | Agricultural mortgage |
| 67 | Mills Corp. | 192.4 | 1,357 | Real estate
investment trust |
| 68 | Corvis Corp. | 188.5 | 863 | Optical networking |
| 69 | MicroStrategy Inc. | 180.4 | 844 | Software |
| 70 | FTI Consulting Inc. | 166.4 | 617 | Financial |
| 71 | LaSalle Hotel Properties | 165.9 | 21 | Real estate
investment trust |
| 72 | OAO Technology Solutions Inc. | 163.1 | 2,288 | IT consulting |
| 73 | Friedman, Billings, Ramsey Group Inc. | 160.8 | 436 | Investment banking |
| 74 | Washington Real Estate Investment Trust | 148.4 | 240 | Real estate
investment trust |
| 75 | Criimi Mae Inc. | 145.4 | 112 | Real estate
investment trust |
| 76 | LCC International Inc. | 130.6 | 760 | Telecommunications |
| 77 | Corporate Executive Board Co. | 128.1 | 818 | Research and consulting |
| 78 | Compudyne Corp. | 127.4 | 716 | Security services |
| 79 | Corporate Office Properties Trust | 125.5 | 157 | Real estate
investment trust |
| 80 | HealthExtras Inc. | 124.4 | 100 | Health-care insurance Web site |
| 81 | Capital Automotive REIT | 118.3 | 22 | Real estate
investment trust |
| 82 | RWD Technologies Inc. | 117.4 | 951 | IT consulting |
| 83 | Trex Co. Inc. | 116.9 | 298 | Synthetic wood decking |
| 84 | VSE Corp. | 111.6 | 550 | Government contractor |
| 85 | PEC Solutions Inc. | 109.2 | 1,140 | Government information systems |
| 86 | American Capital Strategies Ltd. | 104.2 | 82 | Merchant banking |
| 87 | Allied Research Corp. | 96.9 | 440 | Manufacturing |
| 88 | Group 1 Software Inc. | 93.3 | 499 | Software |
| 89 | Motient Corp. | 93.3 | 356 | Wireless
communications |
| 90 | Strayer Education Inc. | 92.9 | 960 | Education |
| 91 | Deltek Systems Inc. | 92.8 | 636 | Software |
| 92 | Via Net.Works Inc. | 90.1 | 922 | Internet service provider |
| 93 | Celera Genomics Corp. | 89.4 | 817 | Genomic research |
| 94 | Saul Centers Inc. | 86.3 | 50 | Real estate investment trust |
| 95 | Advisory Board Co. | 76.4 | 425 | Health care |
| 96 | Visual Networks Inc. | 74.2 | 210 | Computer network management |
| 97 | CoStar Group Inc. | 72.5 | 833 | Commercial real estate information |
| 98 | MCG Capital Corp. | 71.8 | 57 | Business finance |
| 99 | BioReliance Corp. | 69.7 | 575 | Pharmaceutical testing |
| 100 | TeleCommunication Systems Inc. | 69.6 | 509 | Wireless telecommunications |
| 101 | Versar Inc. | 65.8 | 452 | Environmental engineering |
| 102 | OTG Software Inc. | 64.9 | 406 | Software |
| 103 | Vastera Inc. | 62.9 | 464 | Trade management |
| 104 | Sherwood Brands Inc. | 58.3 | 217 | Candy maker |
| 105 | Meridian Medical Technologies Inc. | 58.1 | 339 | Pharmaceutical products |
| 106 | U.S.-China Industrial Exchange Inc. | 56.1 | 486 | Health care products |
| 107 | Bresler & Reiner Inc. | 52 | 120 | Commercial and residential real estate |
| 108 | Halifax Corp. | 51.8 | 339 | Technology services |
| 109 | Williams Industries Inc. | 50.5 | 567 | Construction |
| 110 | GSE Systems Inc. | 50.3 | 256 | Software |
| 111 | Gene Logic Inc. | 43.3 | 272 | Pharmaceutical research services |
| 112 | On-Site Sourcing Inc. | 39.5 | 810 | Document management |
| 113 | FBR Asset Investment Corp. | 39.1 | none | Real estate investment trust |
| 114 | American Community Properties Trust | 34.3 | 254 | Real estate investment trust |
| 115 | Convera Corp. | 34.2 | 300 | Search and retrieval technology |
| 116 | Digene Corp. | 34.2 | 210 | Medical diagnostic devices |
| 117 | NCRIC Group Inc. | 33.2 | 99 | Insurance |
| 118 | Opnet Technologies Inc. | 33 | 224 | Networking software |
| 119 | Network Access Solutions Corp. | 33 | 224 | Telecommunications |
| 120 | Silver Diner Inc. | 31.8 | 894 | Restaurant chain |
| 121 | Igen International Inc. | 31.4 | 360 | Medical diagnostic systems |
| 122 | SteelCloud Inc. | 30.1 | 89 | Computer manufacturing and consulting |
| 123 | Bowl America Inc. | 29.4 | 750 | Bowling centers |
| 124 | Humphrey Hospitality Trust | 28.5 | none | Real estate investment trust |
| 125 | InforMax Inc. | 25.2 | 223 | Pharmaceutical research |
| 126 | Online Resources Corp. | 24.6 | 330 | Online banking |
| 127 | AceComm Corp. | 24.2 | 175 | Telecommunications |
| 128 | Novavax Inc. | 24.1 | 183 | Pharmaceuticals |
| 129 | Insituform East Inc. | 23.2 | 153 | Underground pipeline repairs |
| 130 | Precision Auto Care Inc. | 23.2 | 125 | Auto service franchisor |
| 131 | Netplex Group Inc. | 21.3 | 280 | Information Technology |
| 132 | Spherix Inc. | 19.9 | 356 | Information services |
| 133 | Martek Biosciences Corp. | 18.8 | 166 | Biotech |
| 134 | InteliData Technologies Corp. | 18.3 | 149 | Software development |
| 135 | Infodata Systems Inc. | 15.5 | 63 | Electronic document management |
| 136 | Cysive Inc. | 14.7 | 123 | Software development |
| 137 | Optelecom Inc. | 13.3 | 55 | Telecommunications |
| 138 | Human Genome Sciences Inc. | 12.8 | 1,010 | Pharmaceutical research |
| 139 | Varsity Group Inc. | 12.5 | 20 | Online marketing |
| 140 | Fastcomm Communications Corp. | 10.9 | 63 | Telecommunications hardware |
| 141 | Xybernaut Corp. | 9.8 | 145 | Wearable computers |
| 142 | Stratesec Inc. | 9.1 | 45 | Security consulting |
| 143 | Microlog Corp. | 7.2 | 40 | Customer call center |
| 144 | Vcampus Corp. | 7 | 55 | Online education |
| 145 | United Therapeutics Corp. | 5.7 | 128 | Biotechnology |
| 146 | V-One Corp. | 5.0 | 69 | Security software |
| 147 | Isomet Corp. | 4.7 | 51 | Graphic arts products |
| 148 | Crosswalk.com Inc | 4.5 | 30 | Internet |
| 149 | GenVec Inc. | 4.4 | 83 | Genetic therapy |
| 150 | Essex Corp. | 2.6 | 44 | Optical networking |
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