Question 1

What is the population of Rennes?

Accepted Answer

The commune of Rennes has 227,830 inhabitants per the INSEE census.

Question 2

Are there natural risks in Rennes?

Accepted Answer

Yes, Rennes is exposed to 6 natural risk(s): Inondation, Par une crue à débordement lent de cours d'eau, Phénomène lié à l'atmosphère, Séisme, Tempête et grains (vent), Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Rennes?

Accepted Answer

Out of 4,258 ADEME EPCs available in Rennes, the most common label is D. 4% are rated A or B.

Question 4

What is the crime rate in Rennes?

Accepted Answer

In 2025, the crime rate in Rennes was 41.9 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 Rennes?

Accepted Answer

Tap water in Rennes is compliant with quality standards. Source: ARS / Hub'eau. (10223 analyses over 12 months)

Question 6

What is the air quality in Rennes?

Accepted Answer

According to LCSQA stations (5-year mean) in Rennes: PM2.5 : 9.0 µg/m³, NO₂ : 14.6 µg/m³, PM10 : 14.5 µg/m³. Source: LCSQA / Géod'air.