|Canton||Le Moyen Grésivaudan|
|Intercommunality||CC Le Grésivaudan|
|• Mayor (2014–2020)||Jean-Bernard Allan|
|9 km2 (3 sq mi)|
|• Density||170/km2 (440/sq mi)|
|Time zone||UTC+01:00 (CET)|
|• Summer (DST)||UTC+02:00 (CEST)|
|Elevation||647–2,060 m (2,123–6,759 ft) |
(avg. 1,000 m or 3,300 ft)
|1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. 2 Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once.|
The commune is situated on the Plateau des Petites Roches, a natural balcony above the valley of the Isère River, on the east side of the Massif de la Chartreuse and overlooked by the peak of the Dent de Crolles.
Saint-Hilaire is linked to Montfort, situated on the road between Grenoble and Chambéry in the valley below, by the Funiculaire de Saint-Hilaire du Touvet. Until this was opened in 1924, the village was accessible only on foot, or by mule. The funicular was constructed principally to serve several sanatoriums built at the same time to house tuberculosis patients. A road has long since been opened, and the funicular is now used mostly by tourists and paragliders.
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