| United States Department of Agriculture |
31,018 |
| University System of Maryland |
13,040 |
| United States Department of Energy |
12,518 |
| United States Air Force |
11,579 |
| United States National Forest Service |
9,799 |
| United States Navy |
8,867 |
| Fairfax County Public Schools |
7,062 |
| Lockheed Martin Corporation |
6,918 |
| Veterans Health Administration |
6,397 |
| Community College of Baltimore County |
6,188 |
| United States Army |
5,994 |
| Marriott International, Inc. |
4,867 |
| United States Postal Service |
4,388 |
| US General Services Administration (GSA) |
4,295 |
| Johns Hopkins University |
4,137 |
| United States Environmental Protection Agency |
3,908 |
| Montgomery County Public Schools |
3,563 |
| Virginia Polytechnic Institute and State University |
3,477 |
| National Park Service |
3,270 |
| Towson University |
2,990 |
| Social Security Administration |
2,977 |
| United States Geological Survey |
2,968 |
| National Oceanic and Atmospheric Administration |
2,958 |
| George Mason University |
2,736 |
| Gannett Co., Inc. |
2,717 |
| Capital One Financial Corporation |
2,650 |
| General Dynamics Corporation |
2,634 |
| US Department of Transportation |
2,471 |
| National Science Foundation |
2,470 |
| US Department of Labor |
2,403 |
| Cecil County Public Schools |
2,308 |
| United States Patent and Trademark Office |
2,175 |
| United States Department of State |
2,173 |
| Gallaudet University |
2,096 |
| Montgomery College |
2,093 |
| West Virginia University |
2,039 |
| WilmerHale LLP |
2,036 |
| State of West Virginia Department of Education |
1,973 |
| United States Department of the Interior |
1,916 |
| University of Maryland Eastern Shore |
1,803 |
| Federal Reserve System |
1,777 |
| US Small Business Administration |
1,698 |
| Georgetown University |
1,698 |
| Rockingham County Public Schools |
1,667 |
| United States Coast Guard |
1,637 |
| Hogan & Hartson LLP |
1,635 |
| Anne Arundel Community College |
1,479 |
| US Senate |
1,464 |
| The University of Maryland, Baltimore County |
1,459 |
| Federal Communications Commission |
1,414 |
| United States Dept of Defense Logistics Agency |
1,398 |
| Baltimore County Public Schls |
1,396 |
| Loyola College in Maryland |
1,334 |
| United States Department of Commerce |
1,330 |
| United States Marine Corps |
1,319 |
| Howard University Libraries |
1,309 |
| Aerotek, Inc. |
1,304 |
| Otis Elevator Company |
1,225 |
| Waste Management, Inc. |
1,217 |
| American University |
1,216 |
| Pearson Inc |
1,191 |
| The MITRE Corporation |
1,179 |
| The Black & Decker Corporation |
1,038 |
| T. Rowe Price Group, Inc. |
1,036 |
| US Nuclear Regulatory Commission |
1,033 |
| Freddie Mac/Federal Home Loan Mortgage Corporation |
1,029 |
| Frederick County Public Schools |
989 |
| Defense Information Systems Agency |
982 |
| Arnold & Porter LLP |
947 |
| Smithsonian Institution |
944 |
| Venable LLP |
941 |
| Massachusetts Mutual Financial Group |
934 |
| US Government Accountability Office |
927 |
| United States Fish and Wildlife Service |
926 |
| staffordschools |
926 |
| Baltimore City Community College |
911 |
| Bowie State University |
903 |
| Frostburg State University |
903 |
| The Washington Post |
895 |
| University of Mary Washington |
888 |
| United States Agency for International Development |
886 |
| Patton Boggs LLP |
883 |
| Constellation Energy Group, Inc. |
882 |
| Covington |
868 |
| Salisbury State University |
856 |
| National Institute of Standards and Technology |
817 |
| Mars, Incorporated |
793 |
| Washington and Lee University |
783 |
| Howrey LLP |
770 |
| Coldwell Banker - MD |
764 |
| Interstate Hotels & Resorts, Inc. |
758 |
| Vancouver School District |
736 |
| The Ritz-Carlton Hotel Company, L.L.C. |
705 |
| USDA Animal and Plant Health inspection Service |
674 |
| University of Baltimore |
671 |
| Parsons Brinckerhoff Inc. |
671 |
| Steptoe |
670 |
| Crowell & Moring LLP |
648 |
| Advance Auto Parts, Inc. |
648 |
| Virginia Military Institute |
646 |
| CACI International Inc. |
634 |
| U.S. Census Bureau |
630 |
| Arent Fox LLP |
622 |
| Federal Deposit Insurance Corporation |
611 |
| OPNET Technologies, Inc. |
607 |
| Charles County Public Schools |
606 |
| Inova Health System |
606 |
| AES Corporation |
605 |
| GEICO |
599 |
| SLM Corporation (Sallie Mae) |
599 |
| The Maryland-National Capital Park and Planning Commission |
590 |
| ARINC Incorporated |
577 |
| Roanoke College |
570 |
| Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P. |
558 |
| Legg Mason, Inc. |
546 |
| Anne Arundel County Public Schools |
539 |
| MedImmune, Inc. |
536 |
| Space Telescope Science Institute |
514 |
| Charles County Government - La Plata, MARYLAND |
514 |
| County of Fairfax, Virginia |
507 |
| The Catholic University of America |
503 |
| Howard Community College |
498 |
| The Baltimore Sun |
495 |
| Maryland Department of Health and Mental Hygiene |
492 |
| U.S. International Trade Commission |
490 |
| Dept. of Commerce Bureau of Economic Analysis |
489 |
| Bureau of Reclamation |
484 |
| USA TODAY |
484 |
| Lionbridge Technologies, Inc. |
481 |
| Sinclair Broadcast Group, Inc. |
480 |
| Marshall Space Flight Center |
478 |
| US Office of Personnel Management |
474 |
| James Madison University |
470 |
| The National Archives and Records Administration |
469 |
| The Library of Congress |
466 |
| Centers for Medicare and Medicaid Services |
462 |
| United States Bureau of ATF |
455 |
| United States Department of Labor - Bureau of Labor Statistics |
450 |
| Perdue Farms Incorporated |
446 |
| Defense Advanced Research Projects Agency (DARPA) |
445 |
| ePlus Technology Inc. |
443 |
| MedStar Health |
442 |
| Manassas City Public Schools |
435 |
| Chadbourne & Parke LLP |
426 |
| The Carlyle Group |
425 |
| Peace Corps |
419 |
| Coventry Health Care, Inc. |
415 |
| Columbia Union College |
409 |
| National Labor Relations Board |
405 |
| Software AG, Inc. |
405 |
| Mountain State University |
401 |
| National Public Radio, Inc. |
397 |
| MicroStrategy Incorporated |
396 |
| Minerals Management Service |
389 |
| Maryland MVA |
382 |
| International Monetary Fund |
381 |
| Marshall University |
378 |
| National Education Association of The United States |
373 |
| Aggregate Industries Inc |
373 |
| Health Resources and Services Administration |
371 |
| Hollins University |
370 |
| Presidio Networked Solutions |
367 |
| Fairmont State University |
367 |
| West Virginia State University |
366 |
| Hagerstown Community College |
365 |
| Washington College |
365 |
| Carilion Health System |
363 |
| National Geographic Society |
358 |
| Maryland School for the Deaf |
352 |
| Frederick County Govt |
351 |
| McCormick |
344 |
| ICF International, Inc |
342 |
| Bureau of National Affairs, Inc. |
335 |
| Howard County Public Schools |
333 |
| ManTech International Corporation |
333 |
| American Chemical Society |
333 |
| National Academy of Science |
331 |
| Maxim Healthcare Services, Inc. |
329 |
| Shepherd University |
327 |
| Sunrise Senior Living, Inc. |
326 |
| Pepco Holdings, Inc. |
324 |
| Williams & Connolly |
323 |
| Frederick Community College |
322 |
| ENVIRON Holdings, Inc. |
320 |
| Chevy Chase Bank, F.S.B. |
319 |
| Hanley Wood, LLC |
319 |
| Vertis Inc. |
316 |
| TechAmerica |
314 |
| Hughes Network Systems, LLC |
312 |
| Wiley Rein LLP |
311 |
| College of Notre Dame of Maryland |
309 |
| Federal Trade Commission |
306 |
| Blackboard Inc. |
303 |
| J Lupton Simpson Middle School |
303 |
| United Way of America |
302 |
| CitiFinancial |
300 |
| Intelsat |
299 |
| Public Broadcasting Service |
298 |
| Meade Realty |
297 |
| State of West Virginia |
295 |
