Question 1

What is the population of Saint-Gratien?

Accepted Answer

The commune of Saint-Gratien has 21,297 inhabitants per the INSEE census.

Question 2

Are there natural risks in Saint-Gratien?

Accepted Answer

Yes, Saint-Gratien is exposed to 3 natural risk(s): Mouvement de terrain, Tassements différentiels, Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Saint-Gratien?

Accepted Answer

Out of 473 ADEME EPCs available in Saint-Gratien, the most common label is D. 4% are rated A or B.

Question 4

What is the crime rate in Saint-Gratien?

Accepted Answer

In 2025, the crime rate in Saint-Gratien was 34.1 offences per 1,000 inhabitants (burglaries, theft, violence, vandalism). Source: SSMSI / French Ministry of the Interior.

Question 5

Is the tap water safe to drink in Saint-Gratien?

Accepted Answer

Tap water in Saint-Gratien is compliant with quality standards. Source: ARS / Hub'eau. (319 analyses over 12 months)

Question 6

What is the air quality in Saint-Gratien?

Accepted Answer

According to LCSQA stations (5-year mean) in Saint-Gratien: PM2.5 : 10.6 µg/m³, NO₂ : 25.5 µg/m³, PM10 : 19.7 µg/m³. Source: LCSQA / Géod'air.