| L1B 1C3 information | |
|---|---|
| Streets | 8 |
| Province | Ontario |
| Postal District | L |
| Forward sortation areas(FSA) | L1B |
| Local delivery units(LDU) | 1C3 |
| Name | Place | County | Postal Code |
|---|---|---|---|
| Beaver Street South | Newcastle | Durham | L1B 1C3 |
| Beaver Street South | Newcastle | Durham | L1B 1C3 |
| Beaver Street South | Newcastle | Durham | L1B 1C3 |
| Edward Street East | Newcastle | Durham | L1B 1C3 |
| James Street East | Newcastle | Durham | L1B 1C3 |
| Mill Street South | Newcastle | Durham | L1B 1C3 |
| Robert Street East | Newcastle | Durham | L1B 1C3 |
| Robert Street East | Newcastle | Durham | L1B 1C3 |