Oosterstraat is een straat te Ter Apel in de gemeente Vlagtwedde en is gelegen in de Nederlandse provincie Groningen.
| Postcode | Huisnummers |
|---|---|
| 9561 PH | 3, 4, 12, 13, 14, 15, 16, 17a, 17, 19, 20, 21, 22, 23; |
| 9561 PJ | 25, 26, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 39, 40, 45, 46, 48; |
| 9561 PK | 49, 50, 51, 52, 53, 54, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72; |
| 9561 PL | 75, 76, 77, 78, 80, 82, 84, 85, 88, 89, 90, 92, 93, 95, 96, 99; |