| City of Philadelphia, Pennsylvania |
9,688 |
| University of Delaware |
7,467 |
| SAP America, Inc. |
5,433 |
| AstraZeneca PLC |
4,227 |
| Delaware Technical & Community College Central Office |
3,634 |
| Wyeth |
3,533 |
| Drexel University |
3,335 |
| Saint Joseph's University |
2,499 |
| Prudential Fox Roach, Inc. |
2,156 |
| Unisys Corporation |
2,028 |
| DuPont |
2,026 |
| William Penn School District |
1,891 |
| Dechert LLP |
1,599 |
| Downingtown Area School District |
1,576 |
| ARAMARK Corporation |
1,322 |
| Morgan State University |
1,189 |
| Rowan University |
1,142 |
| Drinker Biddle & Reath LLP |
1,082 |
| The Vanguard Group, Inc. |
995 |
| Air Products and Chemicals, Inc. |
983 |
| Rider University |
976 |
| Saint-Gobain Corporation |
969 |
| Sovereign Bancorp, Inc. |
956 |
| Lower Merion School District |
924 |
| Bryn Mawr College |
915 |
| Pepper Hamilton LLP |
915 |
| Caesar Rodney School District |
860 |
| Airgas, Inc. |
856 |
| Centocor, Inc. |
851 |
| La Salle University |
851 |
| GMAC Mortgage, LLC |
821 |
| Bucks County Community College |
811 |
| Duane Morris LLP |
797 |
| PPL Corporation |
776 |
| Ballard Spahr LLP |
732 |
| Rohm and Haas Company |
721 |
| Souderton Area School District |
690 |
| Campbell Soup Company |
679 |
| Cheltenham Township School District |
671 |
| Blank Rome LLP |
634 |
| Moravian College |
627 |
| Syngenta Corporation |
623 |
| Pennsauken Public Schools |
603 |
| Lincoln University |
594 |
| Shire US |
588 |
| Lehigh University |
575 |
| Philadelphia Newspapers Inc |
568 |
| Christina School District |
567 |
| Fox Rothschild LLP |
566 |
| Cabrini College |
552 |
| Albright College |
540 |
| QVC, Inc. |
536 |
| Aamco Transmissions |
516 |
| Delaware State University |
515 |
| Cozen O'Connor |
510 |
| Sunoco, Inc. |
504 |
| AmerisourceBergen Corporation |
503 |
| Haverford College |
500 |
| Wilmington Trust Corporation |
492 |
| Crown Holdings, Inc. |
491 |
| Gwynedd-Mercy College |
473 |
| Mercer County Community College |
466 |
| Camden County College |
465 |
| Triumph Group, Inc. |
460 |
| Perkiomen Valley School District |
459 |
| Kenexa |
452 |
| Villanova University |
433 |
| Rodale, Inc. |
431 |
| AmeriGas Partners, L.P. |
409 |
| Ursinus College |
402 |
| Independence Blue Cross |
400 |
| University of Pennsylvania Health System |
399 |
| Rosemont College |
396 |
| Avon Grove Intermediate School |
390 |
| Thomas Jefferson University |
370 |
| American Water Company, Inc. |
362 |
| Patterson-Schwartz Real Estate |
362 |
| DecisionOne Corporation |
354 |
| Arkema Inc. |
345 |
| Drexel University College of Medicine |
345 |
| Crozer-Keystone Health System |
326 |
| SEI Investments Co. |
323 |
| Exeter Township School District |
321 |
| Janney Montgomery Scott LLC |
309 |
| Penn Mutual Life Insurance Company |
308 |
| DeSales University |
307 |
| Gloucester County College |
306 |
| Ridley School District |
303 |
| Immaculata University |
299 |
| White and Williams, LLP |
299 |
| Mercy Health System |
295 |
| Hamburg Area School District |
294 |
| Genesis HealthCare Corporation |
293 |
| Toll Brothers, Inc. |
293 |
| AlliedBarton Security Services |
288 |
| Yoh Company |
285 |
| Fox Chase Cancer Center |
278 |
| Northampton School District |
276 |
| Synthes |
270 |
| Interboro School District |
268 |
| Kennedy Health System |
267 |
| Coldwell Banker Preferred - Nancy McConnell |
267 |
| Carpenter Technology Corporation |
250 |
| Olympus America Inc. |
248 |
| SunGard Higher Education |
246 |
| Loews Corporation |
245 |
| Schnader Harrison Segal |
245 |
| Red Clay Consolidated School District |
242 |
| Arbitron Inc. |
241 |
| Bentley Systems, Incorporated |
241 |
| West Pharmaceutical Services, Inc. |
239 |
| Radian Asset Assurance |
239 |
| Christiana Care Corporation |
238 |
| Unionville-Chadds Ford School District |
236 |
| Anne Arundel Health System |
235 |
| Pennsylvania Real Estate Investment Trust |
235 |
| The Reading Hospital and Medical Center |
233 |
| Cottman Transmission Systems |
233 |
| The Morning Call Inc. |
230 |
| Appoquinimink School District |
230 |
| STV Group, Incorporated |
229 |
| Abington Memorial Hospital, Inc. |
224 |
| Boscov's Department Store, LLC |
224 |
| Buena Regional School District |
224 |
| Pep Boys Manny, Moe and Jack |
223 |
| B Braun Medical Inc |
221 |
| Arcadia University of Pennsylvania |
220 |
| Wawa, Inc. |
217 |
| Inter IKEA Systems B.V. |
216 |
| Vishay Intertechnology, Inc. |
216 |
| Transcontinental Direct |
216 |
| Day & Zimmermann |
214 |
| Greater Baltimore Medical Center Healthcare |
214 |
| Lehigh Cement Company |
213 |
| Chestnut Hill College |
211 |
| St. Mary Medical Center |
210 |
| Boyertown Area School District |
210 |
| Fleetwood Area School District |
208 |
| Thomas Jefferson University Hospital |
206 |
| MICROS Systems, Inc. |
202 |
| Johnson Matthey Inc. |
201 |
| Weston Solutions, Inc. |
200 |
| The News Journal |
199 |
| Northampton Community College |
198 |
| Knoll, Inc. |
197 |
| Analytical Graphics, Inc. |
197 |
| Stradley Ronon Stevens |
197 |
| Nazareth Area School District |
197 |
| Cumberland County College |
194 |
| De Lage Landen Financial Services Inc |
194 |
| Montgomery, McCracken, Walker & Rhoads, LLP |
191 |
| NCO Group, Inc. |
189 |
| Seaford School District |
189 |
| Henkels & McCoy, Inc. |
184 |
| Archer & Greiner, P.C. |
183 |
| Lehigh Valley Hospital and Health Network |
180 |
| Hay Group, Inc. |
179 |
| PHH Mortgage |
179 |
| Whiteford, Taylor |
177 |
| Devereux Foundation |
176 |
| Centennial School District |
175 |
| Agusta Aerospace Corporation |
174 |
| Catasauqua Area School District |
174 |
| Susquehanna International Group, LLP |
169 |
| Telerx Marketing Inc. |
168 |
| ICT Group, Inc. |
168 |
| Journal Register Company |
164 |
| Subaru of America, Inc. |
163 |
| Liberty Property Trust |
162 |
| Oxford Area School District |
162 |
| Icon |
161 |
| Brandywine Heights Area School District |
161 |
| Widener University |
159 |
| Goddard Systems, Inc. |
159 |
| PJM Interconnection, L.L.C. |
158 |
| ParenteBeard, LLC |
158 |
| Upper Dublin High School |
158 |
| East Penn School District |
156 |
| Primavera Software |
155 |
| Penn National Gaming, Inc. |
155 |
| Bosch Rexroth Corporation |
152 |
| Chester County Hospital |
151 |
| Aptara |
151 |
| Valley Forge Military Academy & College |
150 |
| EnerSys Inc. |
150 |
| Bucks County Courier Times |
149 |
| Re/Max Of Reading Realtors |
149 |
| Doylestown Hospital |
148 |
| Modine Manufacturing Company |
148 |
| Dilworth Paxson LLP |
148 |
| Aqua America, Inc. |
146 |
| Lutron Electronics Company, Inc. |
145 |
| Advance News Magazine |
145 |
| Draeger Medical Inc. |
144 |
| Academy of Natural Sciences |
143 |
| CITI |
143 |
| Lehighton Area School District |
142 |
| Connolly, Bove, Lodge |
140 |
| BDP International, Inc. |
140 |
| Courier-Post |
138 |
