Ille-et-Vilaine
Det Ille-et-Vilaine Department ([il e vilɛn]; üüb Bretoonsk: Il-ha-Gwilen) as ian faan dön fjauer departmenten faan a Bretagne uun Frankrik. At department leit uun a uast faan't regiuun. Det hee 1.094.677 lidj (2021). At hoodsteed faan't department as Rennes.

Geografii
 Struumer: Ille, Vilaine, Affe an Seiche.
 Eilunen: Île de Cézembre an letjer eilunen.

Kliima

Steeden
Dön tjiin gratst steeden uun't department san:

Iindialing faan Ferwalting

At department hee fjauer arrondissementen:

Befölkring
 1975 folksteeling - 702.199
 1982 folksteeling - 749.764
 1990 folksteeling - 798.718
 1999 folksteeling - 867.533
 2007 schetsing - 955.846
 2015 schetsing - 1.042.884
 2018 schetsing - 1.069.228

Kwelen

Ille-et-Vilaine