| Locality | Post Code |
|---|---|
| Atglen, Chester | 19310 |
| Avondale, Chester | 19311 |
| Berwyn, Chester | 19312 |
| Birchrunville, Chester | 19421 |
| Brandamore, Chester | 19316 |
| Bulltown, Chester | 19520 |
| Chadds Ford, Chester | 19317 |
| Chatham, Chester | 19390 |
| Chester Springs, Chester | 19425 |
| Chesterbrook, Chester | 19087 |
| Coatesville, Chester | 19320 |
| Cochranville, Chester | 19330 |
| Devault, Chester | 19432 |
| Devon, Chester | 19333 |
| Downingtown, Chester | 19335 |
| Eagle, Chester | 19480 |
| East Fallowfield, Chester | 19320 |
| Elverson, Chester | 19520 |
| Exton, Chester | 19341 |
| Franklin, Chester | 19341 |
| Frazer, Chester | 19355 |
| Gap, Chester | 17527 |
| Glenmoore, Chester | 19343 |
| Honey Brook, Chester | 19344 |
| Immaculata, Chester | 19345 |
| Joanna, Chester | 19520 |