Montgeron
Commune
The town hall in Montgeron
Coat of arms
Location of Montgeron
Montgeron Show map of France Montgeron Show map of Île-de-France (region)
Coordinates: 48°42′14″N 2°27′38″E / 48.7039°N 2.4605°E / 48.7039; 2.4605
Country	France
Region	Île-de-France
Department	Essonne
Arrondissement	Évry
Canton	Draveil and Vigneux-sur-Seine
Intercommunality	Val d'Yerres Val de Seine
Government
• Mayor (2020–2026)	Sylvie Carillon (LR)
Area 1	11.22 km2 (4.33 sq mi)
Population  (Jan. 2019)[1]	23,760
• Density	2,100/km2 (5,500/sq mi)
Time zone	UTC+01:00 (CET)
• Summer (DST)	UTC+02:00 (CEST)
INSEE/Postal code	91421 /91230
Elevation	31–88 m (102–289 ft)
1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries.

Montgeron is a commune. It is in Île-de-France in the Essonne department in north France.

The café Au Reveil Matin at 22 Avenue Jean Jaurès was the starting point of the first Tour de France in 1903. Montgeron was also the starting point of the 21st (and last) stage of the 2017 Tour de France.

Montgeron is twinned with:

• Eschborn, Germany
• Póvoa de Varzim, Portugal
• Viernau, Germany

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