Why is it der Turiner?

Turiner ends in -er, and most nouns ending in -er are masculine: in a German dictionary, 86% of them take der.

All nouns ending in -er
Sense 1
der

Meaning

[1] person who lives in Turin or was born from there

[1] Person, die in Turin lebt oder von dort geboren ist

Examples

[1] His father is Turinerä

[1] Sein Vater ist Turiner.

Declension

1 Singular Plural
Nominativ der Turiner die Turiner
Genitiv des Turiners der Turiner
Dativ dem Turiner den Turinern
Akkusativ den Turiner die Turiner

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary