Westerstraat is een straat te Delft in de gemeente Delft en is gelegen in de Nederlandse provincie Zuid-Holland.
| Postcode | Huisnummers |
|---|---|
| 2613 RD | 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 5, 3, 1; |
| 2613 RE | 61, 59, 57, 55, 53, 51, 49, 47, 45, 43, 39, 39, 37, 37H, 37G, 37F, 37E, 37D, 37C, 37B, 37A; |
| 2613 RJ | 46, 48, 50, 52, 54, 56, 58, 60, 82, 84, 86, 88, 90; |
| 2613 RH | 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24; |
| 2613 RK | 94, 96, 100, 102A, 102B, 102, 104A, 104B, 104, 106A, 106B, 106, 108, 110, 112, 114, 116, 118, 120, 122; |
| 2613 RL | 148, 150, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146; |
| 2613 RG | 63, 65, 67, 69A, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101; |