Oester is een straat te Middenmeer in de gemeente Hollands Kroon en is gelegen in de Nederlandse provincie Noord-Holland.
| Postcode | Huisnummers |
|---|---|
| 1775 JG | 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 16, 14, 12, 10, 8, 6, 4, 2; |
| 1775 JH | 31, 29, 27, 25, 23, 21, 19, 17, 15, 13, 11, 9, 7, 5, 3, 1; |