| The National Cancer Institute |
25,079 |
| Johns Hopkins University |
20,693 |
| U.S. Food and Drug Administration |
18,967 |
| National Institutes of Health (NIH) |
14,704 |
| Indian Health Service |
11,980 |
| Lockheed Martin Corporation |
11,875 |
| Marriott International Inc. |
11,375 |
| University Of Maryland |
9,864 |
| Montgomery County Public Schools |
6,117 |
| Community College of Baltimore County |
5,989 |
| Montgomery County, Maryland |
5,182 |
| National Oceanic and Atmospheric Administration |
5,164 |
| State of Maryland |
4,249 |
| Social Security Administration |
3,501 |
| Aegon Group |
2,873 |
| The Ritz-Carlton Hotel Company, L.L.C. |
2,390 |
| University of Maryland School of Nursing |
2,369 |
| USDA Animal and Plant Health inspection Service |
2,307 |
| Prince George's County Public Schools |
2,236 |
| Baltimore County Public Schools |
2,184 |
| Sodexo, Inc. |
2,180 |
| University of Maryland, Baltimore |
2,177 |
| Aerotek, Inc. |
2,104 |
| Choice Hotels International, Inc. |
2,096 |
| Towson University |
2,033 |
| GEICO |
1,940 |
| TEKsystems, Inc. |
1,927 |
| Cecil County Public Schools |
1,899 |
| Charles County Public Schools |
1,838 |
| Montgomery College |
1,664 |
| Maryland Department of Health and Mental Hygiene |
1,574 |
| Coventry Health Care, Inc. |
1,555 |
| Baltimore City Community College |
1,538 |
| Hughes Network Systems, LLC |
1,534 |
| The University of Maryland, Baltimore County |
1,532 |
| Morgan State University |
1,466 |
| Johns Hopkins Bloomberg School of Public Health |
1,428 |
| Anne Arundel Community College |
1,428 |
| CIENA Corporation |
1,405 |
| MedImmune, LLC |
1,398 |
| Loyola University Maryland |
1,361 |
| MedStar Health |
1,246 |
| US Nuclear Regulatory Commission |
1,246 |
| Board of Education - Carroll County Public Schools |
1,244 |
| Howard County Public Schools |
1,242 |
| Discovery Communications, Inc. |
1,197 |
| University of Maryland Eastern Shore |
1,179 |
| Centers for Medicare and Medicaid Services |
1,176 |
| Salisbury State University |
1,175 |
| Coppin State University |
1,146 |
| Harford County Maryland |
1,096 |
| National Institute of Standards and Technology |
1,092 |
| Bowie State University |
1,078 |
| Anne Arundel County Public Schools |
952 |
| Goucher College |
934 |
| Adventist HealthCare, Inc. |
911 |
| Perdue Farms Incorporated |
895 |
| The National Archives and Records Administration |
869 |
| National Institute of Allergy and Infectious Diseases |
841 |
| CareFirst BlueCross BlueShield corp |
826 |
| Constellation Energy Resources, LLC |
824 |
| Frederick County Public Schools |
812 |
| GXS |
772 |
| T. Rowe Price |
754 |
| Stevenson University |
739 |
| University of Baltimore |
735 |
| U.S. Census Bureau |
724 |
| Maryland State Department of Education |
675 |
| Charles County Government |
661 |
| Vocus Incorporated |
639 |
| Department of Public Safety and Correctional Services |
631 |
| Frostburg State University |
630 |
| ARINC Incorporated |
599 |
| Hagerstown Community College |
590 |
| W.R. Grace & Co. |
589 |
| Experis Technology Group |
570 |
| Legg Mason, Inc. |
567 |
| Howard Community College |
550 |
| SafeNet, Inc. |
549 |
| Maryland Institute of College Art |
548 |
| Micro Focus International plc |
539 |
| Anne Arundel Health System |
538 |
| University of Maryland University College |
531 |
| NCI-Frederick |
521 |
| McCormick & Company, Inc |
515 |
| The Maryland-National Capital Park and Planning Commission |
515 |
| Bon Secours Health System, Inc |
507 |
| Under Armour, Inc. |
483 |
| GEA Process Engineering, Inc |
467 |
| HMSHost Corporation |
454 |
| Arbitron Inc. |
453 |
| United BioSource Corporation |
446 |
| Maryland Department of Labor, Licensing and Regulation |
441 |
| Maryland Office of the Public Defender |
433 |
| New York Life Insurance Company |
426 |
| The Whiting-Turner Contracting Company |
424 |
| OneMain Financial |
423 |
| Washington College |
422 |
| LifeBridge Health, Inc. |
418 |
| MDOT |
408 |
| United States Naval Academy |
405 |
| Space Telescope Science Institute |
400 |
| Euler Hermes ACI |
398 |
| Harford County Public Schools |
391 |
| Baltimore City Public School |
387 |
| Prince George's County, Maryland |
384 |
| Otsuka America Pharmaceutical, Inc |
380 |
| TeleCommunication Systems, Inc. |
375 |
| GP Strategies Corporation |
371 |
| Maryland Department of Human Resources |
369 |
| Wor-Wic Community College |
363 |
| Holy Cross Hospital |
359 |
| National Security Agency/Central Security Service |
359 |
| Baltimore City Government |
354 |
| University of Maryland Medical System Corporation |
348 |
| Goodwill Industries International, Inc. |
347 |
| OPNET Technologies, Inc. |
347 |
| Washington County Public Schools |
345 |
| TESSCO Technologies Incorporated |
344 |
| Greater Baltimore Medical Center Healthcare |
342 |
| Health Resources and Services Administration |
332 |
| Westat, Inc. |
329 |
| Maryland School for the Deaf |
327 |
| Juvenile Service |
327 |
| Bravo Health, Inc. |
320 |
| Harford Community College |
318 |
| MICROS Systems, Inc. |
316 |
| Erickson Living |
316 |
| Maryland State Highway Administration |
314 |
| Frederick Community College |
313 |
| Allegis Group, Inc. |
307 |
| Shore Health System |
298 |
| Rohde & Schwarz |
295 |
| Merkle Inc. |
294 |
| Miles & Stockbridge P.C. |
290 |
| McDaniel College |
287 |
| Prometric |
285 |
| RTKL Associates Inc. |
285 |
| National Heart Lung and Blood |
284 |
| Norsk Hydro Americas, Inc. |
284 |
| Maryland Judiciary |
281 |
| Maryland Department of the Environment |
280 |
| Frederick Memorial Healthcare System |
278 |
| Maryland General Hospital |
277 |
| The Brickman Group, Ltd. |
271 |
| Danfoss Inc |
270 |
| Uniformed Services University of the Health Sciences |
266 |
| Maryland Department of Natural Resources |
265 |
| St. Agnes Hospital |
264 |
| Anne Arundel County |
260 |
| Sourcefire, Inc. |
260 |
| Maxim Healthcare Services |
259 |
| Upper Chesapeake Health |
257 |
| Giant of Maryland, LLC |
257 |
| Frederick County |
254 |
| Radio One, Inc. |
253 |
| Qiagen |
247 |
| Meritus Health |
246 |
| Dimensions Healthcare System |
245 |
| National Institute of Neurological Disorders and Stroke |
244 |
| Biota Pharmaceuticals, Inc |
241 |
| Prince George's Community College |
241 |
| Coldwell Banker - MD |
241 |
| Western Maryland Health System |
239 |
| Major Lindsey & Africa |
237 |
| Queen Anne's County, Maryland |
230 |
| Sandler Training |
229 |
| U.S. Pharmacopeial Convention |
227 |
| Clark Construction Group, LLC |
226 |
| Laureate Education |
221 |
| St. Mary's College of Maryland |
218 |
| Sinclair Broadcast Group, Inc. |
216 |
| Emergent BioSolutions, Inc. |
210 |
| Baltimore Gas and Electric Company |
207 |
| University System of Maryland |
206 |
| University of Maryland School of Medicine |
205 |
| Calvert County Public Schools |
194 |
| BroadSoft |
194 |
| Maryland Department of Budget and Management |
187 |
| Powerweave |
184 |
| 1st Mariner Bank |
184 |
| The City of Frederick, Maryland |
184 |
| Tech USA |
184 |
| Allegis Group Services, Inc. |
183 |
| Education Affiliates, Inc. |
183 |
| Washington Suburban Sanitary Commission (WSSC) |
179 |
| All Risks, Ltd. |
178 |
| The Sheridan Group |
176 |
| Catholic Relief Services |
175 |
| MedStar Southern Maryland Hospital Center |
173 |
| The Baltimore Sun |
173 |
| Champion Realty |
172 |
| Carroll Community College |
171 |
| Howard County Department of Housing |
169 |
| Doctors Community Hospital |
169 |
| American Capital, Ltd. |
169 |
| Sandy Spring Friends School |
167 |
| Bishop McNamara High School |
166 |
| Suburban Hospital |
165 |
| Baltimore County, Maryland |
165 |
