Oostersingel is een straat te Schagen in de gemeente Schagen en is gelegen in de Nederlandse provincie Noord-Holland.
| Postcode | Huisnummers |
|---|---|
| 1741 MR | 30, 32, 34, 36, 38, 40, 42, 44, 46, 28, 26, 24, 22, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2, 48; |
| 1741 MP | 29, 27, 25, 23, 21, 19, 17, 15, 13, 1; |