Castorstraat is een straat te Purmerend in de gemeente Purmerend en is gelegen in de Nederlandse provincie Noord-Holland.
| Postcode | Huisnummers |
|---|---|
| 1443 AL | 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31; |
| 1443 AK | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13A, 13B, 13C, 13D, 13E, 13F, 13G, 13H, 13I, 13J, 13K, 13L, 13M, 13N, 13P, 13Q, 13R, 13S, 13T, 13U, 13V, 14, 15, 16, 17, 18, 19; |