Willem de Zwijgerlaan is een straat te Castricum in de gemeente Castricum en is gelegen in de Nederlandse provincie Noord-Holland.
| Postcode | Huisnummers |
|---|---|
| 1901 CR | 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44; |
| 1901 CN | 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33; |
| 1901 CP | 35, 37, 39, 41, 43, 45, 47a, 47b, 47c, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71; |
| 1901 CS | 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88; |
| 1901 CT | 90a, 90b, 90, 92a, 92b, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126; |