Question 1

What is the population of Saint-Denis?

Accepted Answer

The commune of Saint-Denis has 511 inhabitants per the INSEE census.

Question 2

Are there natural risks in Saint-Denis?

Accepted Answer

Yes, Saint-Denis is exposed to 12 natural risk(s): Eboulement ou chutes de pierres et de blocs, Feu de forêt, Glissement de terrain, Inondation, Mouvement de terrain, Par remontées de nappes naturelles, Par ruissellement et coulée de boue, Par une crue torrentielle ou à montée rapide de cours d'eau, Radon, Rupture de barrage, Séisme, Tassements différentiels. Source: Géorisques / GASPAR.

Question 3

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

Accepted Answer

Out of 53 ADEME EPCs available in Saint-Denis, the most common label is C. 11% are rated A or B.

Question 4

What is the crime rate in Saint-Denis?

Accepted Answer

In 2025, the crime rate in Saint-Denis was 0 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-Denis?

Accepted Answer

Tap water in Saint-Denis is non-compliant on some parameters. Source: ARS / Hub'eau. (164 analyses over 12 months) Exceedances were observed for: plomb.

Question 6

What is the air quality in Saint-Denis?

Accepted Answer

According to LCSQA stations (5-year mean) in Saint-Denis: PM2.5 : 8.9 µg/m³, NO₂ : 9.0 µg/m³, PM10 : 13.7 µg/m³. Source: LCSQA / Géod'air.