| L1R 1X4 information | |
|---|---|
| Streets | 5 |
| Province | Ontario |
| Postal District | L |
| Forward sortation areas(FSA) | L1R |
| Local delivery units(LDU) | 1X4 |
| Name | Place | County | Postal Code |
|---|---|---|---|
| Forest Heights Street | Whitby | Durham | L1R 1X4 |
| Forest Heights Street | Whitby | Durham | L1R 1X4 |
| Pinestone Court | Whitby | Durham | L1R 1X4 |
| Pinestone Court | Whitby | Durham | L1R 1X4 |
| Yorkshire Crescent | Whitby | Durham | L1R 1X4 |