| Locality | Post Code |
|---|---|
| Alburtis, Lehigh | 18011 |
| Allentown, Lehigh | 18101, 18102, 18103, 18104, 18106, … |
| Bethlehem, Lehigh | 18025 |
| Breinigsville, Lehigh | 18031 |
| Catasauqua, Lehigh | 18032 |
| Center Valley, Lehigh | 18034 |
| Coopersburg, Lehigh | 18036 |
| Coplay, Lehigh | 18037 |
| East Greenville, Lehigh | 18041 |
| East Texas, Lehigh | 18046 |
| Emerald, Lehigh | 18080 |
| Emmaus, Lehigh | 18049, 18098 |
| Fogelsville, Lehigh | 18051 |
| Fountain Hill, Lehigh | 18015 |
| Germansville, Lehigh | 18053 |
| Hokendauqua, Lehigh | 18052 |
| Ironton, Lehigh | 18037 |
| Kempton, Lehigh | 19529 |
| Kutztown, Lehigh | 19530 |
| Laurys Station, Lehigh | 18059 |
| Limeport, Lehigh | 18060 |
| Macungie, Lehigh | 18062 |
| Neffs, Lehigh | 18065 |
| New Tripoli, Lehigh | 18066 |
| Old Zionsville, Lehigh | 18068 |
| Orefield, Lehigh | 18069 |