Seine-Saint-Denis (French pronunciation: [sɛn sɛ̃ d(ə)ni]) is a French department located in the Île-de-France region and in the Grand Paris. Locally, it is often referred to colloquially as quatre-vingt treize or neuf trois (i.e., "ninety-three" or "nine three"), after its official administrative number, 93. The learned and rarely used demonym for the inhabitants is Séquano-Dionysiens; more common is Dionysiens.