Postcodes for Kastelholm - Åland Islands
List of postcodes associated with Kastelholm in the Åland Islands.
| Postcode | Town/locality | Region / county / province | Type | Source | Last update |
|---|---|---|---|---|---|
| 22520 | Kastelholm | Ålands landsbygd | Complete postcode | GeoNames Postal Codes | 7/6/2026 |