| Locality | Post Code |
|---|---|
| New Texas, Lancaster | 17563 |
| Nickel Mines, Lancaster | 17562 |
| Ninepoints, Lancaster | 17509 |
| Oakryn, Lancaster | 17563 |
| Old Line, Lancaster | 17545 |
| Oregon, Lancaster | 17540 |
| Oyster Point, Lancaster | 17601 |
| Paradise, Lancaster | 17562 |
| Peach Bottom, Lancaster | 17563 |
| Penn Hill, Lancaster | 17563 |
| Penryn, Lancaster | 17564 |
| Pequea, Lancaster | 17565 |
| Poplar Grove, Lancaster | 17543 |
| Providence, Lancaster | 17560 |
| Quarryville, Lancaster | 17566 |
| Rawlinsville, Lancaster | 17532 |
| Reamstown, Lancaster | 17567 |
| Redrun, Lancaster | 17578 |
| Refton, Lancaster | 17568 |
| Reinholds, Lancaster | 17569 |
| Rheems, Lancaster | 17570 |
| Rockrimmin Ridge, Lancaster | 17540 |
| Rohrerstown, Lancaster | 17603 |
| Ronks, Lancaster | 17572 |
| Roseville, Lancaster | 17601 |
| Rothsville, Lancaster | 17543 |