| 301 | The Kimball Press, Inc.Not reported | Corporation | Not reported | Not reported |
| 302 | Ctk AssociatesNot reported | Partnership | Not reported | Not reported |
| 303 | Data Placement, Inc.Not reported | Corporation | Not reported | Not reported |
| 304 | Devon Dodge, Inc.Not reported | Corporation | Not reported | Not reported |
| 305 | Eagle Courier and Limousine Service, Inc.Not reported | Corporation | Not reported | Not reported |
| 306 | Sylvester and Associates, Inc.Not reported | Corporation | Not reported | Not reported |
| 307 | 144, Inc.Not reported | Corporation | Not reported | Not reported |
| 308 | Chelonian Inc.Not reported | Corporation | Not reported | Not reported |
| 309 | Adoption Hotline, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 310 | Ed Faggioli Corp.Not reported | Corporation | Not reported | Not reported |
| 311 | Devon 50, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 312 | Main Line Developers Ltd.Not reported | Corporation | Not reported | Not reported |
| 313 | The Primak Educational FoundationNot reported | Nonprofit | Not reported | Not reported |
| 314 | Arrow Graphics, IncorporatedNot reported | Corporation | Not reported | Not reported |
| 315 | Edward Davis Inc.Not reported | Corporation | Not reported | Not reported |
| 316 | Sep Enterprises, Inc.Not reported | Corporation | Not reported | Not reported |
| 317 | Creative Office Systems, Ltd.Not reported | Corporation | Not reported | Not reported |
| 318 | Congregation of the Benedictines of Jesus Crucified, Regina Mundi Priory, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 319 | Geronomic Services, Inc.Not reported | Corporation | Not reported | Not reported |
| 320 | Ocs PartnersNot reported | Partnership | Not reported | Not reported |
| 321 | T-square Distribution Co., Inc.Not reported | Corporation | Not reported | Not reported |
| 322 | Chester Springs Securities, Inc.Not reported | Corporation | Not reported | Not reported |
| 323 | Hamilton Financial CorporationNot reported | Corporation | Not reported | Not reported |
| 324 | Tele-craft, Inc.Not reported | Corporation | Not reported | Not reported |
| 325 | Acorn Marketing & Design, Inc.Not reported | Corporation | Not reported | Not reported |
| 326 | Shoe Inn, Inc.Not reported | Corporation | Not reported | Not reported |
| 327 | Daniel A. Wallace M.d., P.c.Not reported | Corporation | Not reported | Not reported |
| 328 | Jerica, Ltd.Not reported | Corporation | Not reported | Not reported |
| 329 | Diatek, Inc.Not reported | Corporation | Not reported | Not reported |
| 330 | Devon Swim AssociationNot reported | Nonprofit | Not reported | Not reported |
| 331 | Hospitality & Marketing, Ltd.Not reported | Corporation | Not reported | Not reported |
| 332 | J. Benson Associates, Inc.Not reported | Corporation | Not reported | Not reported |
| 333 | 2800 AssociatesNot reported | Partnership | Not reported | Not reported |
| 334 | Accent Publishing Co., Inc.Not reported | Corporation | Not reported | Not reported |
| 335 | Denprax Management Systems, Inc.Not reported | Corporation | Not reported | Not reported |
| 336 | Egn CorporationNot reported | Corporation | Not reported | Not reported |
| 337 | Cultural and Educational Resources, Inc.Not reported | Nonprofit | Not reported | Not reported |
| 338 | Bonfleur Development CorporationNot reported | Corporation | Not reported | Not reported |
| 339 | Arlington PartnershipNot reported | Partnership | Not reported | Not reported |
| 340 | Anglo-american Hydro Dynamics, Inc.Not reported | Corporation | Not reported | Not reported |
| 341 | Communications and Broadcast, IncorporatedNot reported | Corporation | Not reported | Not reported |
| 342 | Devon Commemoratives, Inc.Not reported | Corporation | Not reported | Not reported |
| 343 | Business Computer Centers, Inc.Not reported | Corporation | Not reported | Not reported |
| 344 | Cather, Inc.Not reported | Corporation | Not reported | Not reported |
| 345 | J R Holding Corp.Not reported | Corporation | Not reported | Not reported |
| 346 | Industrial Towing, Inc.Not reported | Corporation | Not reported | Not reported |
| 347 | Alphatech Molding Inc.Not reported | Corporation | Not reported | Not reported |
| 348 | Radnor Restoration and Building CompanyNot reported | Corporation | Not reported | Not reported |
| 349 | Radnor Planning Associates, Inc.Not reported | Corporation | Not reported | Not reported |
| 350 | Dubrow Distributors of Devon, Inc.Not reported | Corporation | Not reported | Not reported |