Achterwei is een straat te Wâlterswâld in de gemeente Dantumadiel en is gelegen in de Nederlandse provincie Friesland.
| Postcode | Huisnummers |
|---|---|
| 9113 PP | 1, 3, 5c, 5, 7, 9, 11, 13, 15, 17, 19, 21a, 21, 23a, 23, 25, 27, 29a, 29, 31; |
| 9113 PR | 2, 4, 6, 8, 10a, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32a, 32b, 32c, 32, 34, 36; |