Oosterstraat is een straat te Leiden in de gemeente Leiden en is gelegen in de Nederlandse provincie Zuid-Holland.
| Postcode | Huisnummers |
|---|---|
| 2315 LE | 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83; |
| 2315 LD | 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47; |
| 2315 LH | 16, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48; |
| 2315 LC | 7, 9, 11, 13; |
| 2315 LJ | 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96; |
| 2315 LB | 1, 3, 5; |
| 2315 LG | 2A, 2B, 2C, 2D, 2, 4A, 4, 6A, 6, 8A, 8, 10A, 10, 12A, 12, 14; |