Why is it der Stuttgarter?

Stuttgarter 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] A resident, resident of the city of Stuttgart, a person born in Stuttgart

[1] ein Einwohner, Bewohner der Stadt Stuttgart, eine in Stuttgart geborene Person

Examples

[1] The Stuttgarter are shared on the subject of "Stuttgart 21"

[1] Die Stuttgarter sind beim Thema „Stuttgart 21“ geteilter Meinung.

[1] I am born in Stuttgart

[1] Ich bin gebürtiger Stuttgarter.

Declension

1 Singular Plural
Nominativ der Stuttgarter die Stuttgarter
Genitiv des Stuttgarters der Stuttgarter
Dativ dem Stuttgarter den Stuttgartern
Akkusativ den Stuttgarter die Stuttgarter

Pronunciation

Dictionary entries include material from Wiktionary. Wiktionary