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