Westereiland is een straat te Medemblik in de gemeente Medemblik en is gelegen in de Nederlandse provincie Noord-Holland.
| Postcode | Huisnummers |
|---|---|
| 1671 HZ | 57, 59, 61, 63, 65, 67, 71A, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97; |
| 1671 HW | 39, 41, 43, 45, 47, 49, 51, 53, 55; |
| 1671 HX | 110, 112, 114, 116, 118, 120, 122, 124, 126; |
| 1671 HS | 2A, 2B, 2, 4, 6, 8, 10, 12, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38; |
| 1671 HV | 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37; |
| 1671 HT | 40, 42, 44, 46, 48, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88A, 88B, 88C, 88D, 88; |