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