| 18011 Alburtis | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18101 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18102 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18103 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18104 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18105 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18106 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18109 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18195 Allentown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18109 Allentown Airport Branch | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18025 Bethlehem | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18031 Breinigsville | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18032 Catasauqua | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18034 Center Valley | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18036 Coopersburg | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18037 Coplay | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18025 Dun & Bradstreet | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18046 East Texas | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18080 Emerald | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18049 Emmaus | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18098 Emmaus | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18099 Emmaus | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18051 Fogelsville | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18053 Germansville | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18052 Hokendauqua | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18037 Ironton | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18059 Laurys Station | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18060 Limeport | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18062 Macungie | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18065 Neffs | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18066 New Tripoli | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18068 Old Zionsville | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18068 Old Zionsvlle | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18069 Orefield | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18098 Rodale Press | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18099 Rodale Press | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18078 Schnecksville | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18079 Slatedale | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18080 Slatington | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18087 Trexlertown | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18106 Wescosville | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18052 Whitehall | 610/484 | Lehigh County | Pennsylvania (PA) |
| 18092 Zionsville | 610/484 | Lehigh County | Pennsylvania (PA) |