Achterstraat is een straat te Alkmaar in de gemeente Alkmaar en is gelegen in de Nederlandse provincie Noord-Holland.
| Postcode | Huisnummers |
|---|---|
| 1811 LH | 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43A, 43B, 43C, 43D, 43, 45A, 45B, 45C, 45D, 45E, 45F, 45G, 45H, 45J, 45K, 45L, 45M, 45N, 45P, 45Q, 45R, 45, 45, 21, 21A, 19, 19C, 19B, 19A, 17, 17A, 15, 15, 15A, 13, 9, 7, 3, 3D, 3C, 3A, 1, 1E, 1D, 1C, 1B, 1A, 47A, 47B, 47, 47, 53; |
| 1811 LJ | 2, 4, 6, 8, 10, 12A, 12, 14, 16, 18A, 18, 20, 22, 24, 26, 28, 30, 32, 34A, 34B, 34C, 36, 38A, 38B, 38C, 40, 42, 44, 46A, 46, 48A, 48, 50, 52, 54A, 54B, 54, 56, 58A, 58B, 58C, 58, 60, 62A, 62B, 62, 64; |