Oosterstraat is een straat te Delft in de gemeente Delft en is gelegen in de Nederlandse provincie Zuid-Holland.
| Postcode | Huisnummers |
|---|---|
| 2611 TW | 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 6, 4, 2; |
| 2611 TT | 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25; |
| 2611 TV | 69, 65, 63, 63B, 61, 59, 57, 55, 51, 49, 47, 45, 43, 41, 39, 37, 35, 33, 31, 29, 27; |
| 2611 TX | 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 94; |