Westerstraat is een straat te Purmerend in de gemeente Purmerend en is gelegen in de Nederlandse provincie Noord-Holland.
| Postcode | Huisnummers |
|---|---|
| 1441 AR | 5, 7, 9, 11, 13, 17, 21, 23, 25, 27A, 27, 29, 31A, 31, 33, 41B, 41, 45, 47, 51, 53A, 53B, 53C, 53, 55, 57A, 57, 59A, 59, 61A, 61, 63A, 63, 65A, 65B, 65C, 65D, 65E, 65F, 65G, 65H, 65J, 65K, 65L, 65M, 65N, 65P, 65Q, 65, 67, 75, 91, 93, 95; |
| 1441 AS | 2A, 2B, 2C, 2, 4A, 4B, 4C, 4, 6, 8, 12, 16, 34, 36, 38, 40, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 74; |
| 1441 AT | 76A, 76B, 76C, 76, 80, 82, 84, 84, 86, 88, 90, 94, 96, 98, 100, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 126A, 126B, 126, 128, 130; |