| Dithmarsch | Nominativ, Singular | nominative case, singular | |
| Dithmarsche | Genitiv, Singular | genitive case, singular | |
| Dithmarschen | Dativ, Singular | dative case, singular | |
| Dithmarsch(e)s | Akkusativ, Singular | accusative case, singular | |
| Dithmarscher | Nominativ, Plural | nominative case, plural | |
| Dithmarschern | Genitiv, Plural | genitive case, plural | |
| Dithmarschn | Dativ, Plural | dative case, plural |