Question 1

What is the population of Montlhéry?

Accepted Answer

The commune of Montlhéry has 9,238 inhabitants per the INSEE census.

Question 2

Are there natural risks in Montlhéry?

Accepted Answer

Yes, Montlhéry is exposed to 2 natural risk(s): Inondation, Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Montlhéry?

Accepted Answer

Out of 373 ADEME EPCs available in Montlhéry, the most common label is D. 6% are rated A or B.

Question 4

What is the crime rate in Montlhéry?

Accepted Answer

In 2025, the crime rate in Montlhéry was 31.9 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 Montlhéry?

Accepted Answer

Tap water in Montlhéry is compliant with quality standards. Source: ARS / Hub'eau. (213 analyses over 12 months)

Question 6

What is the air quality in Montlhéry?

Accepted Answer

According to LCSQA stations (5-year mean) in Montlhéry: PM2.5 : 13.6 µg/m³, NO₂ : 43.8 µg/m³, PM10 : 20.3 µg/m³. Source: LCSQA / Géod'air.