De Spiker is een straat te Harlingen in de gemeente Harlingen en is gelegen in de Nederlandse provincie Friesland.
| Postcode | Huisnummers |
|---|---|
| 8861 VC | 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36A, 36, 38, 40, 42, 44, 8, 6, 4, 2; |
| 8861 VB | 47, 45, 43, 41, 39, 37, 35, 33, 31, 21, 19, 17, 15, 13, 11, 9, 7, 5, 3, 1; |