Question 1

What is the population of Onnion?

Accepted Answer

The commune of Onnion has 1,281 inhabitants per the INSEE census.

Question 2

Are there natural risks in Onnion?

Accepted Answer

Yes, Onnion is exposed to 14 natural risk(s): Avalanche, Eboulement ou chutes de pierres et de blocs, Effet de surpression, Engins de guerre, Glissement de terrain, Inondation, Mouvement de terrain, Par lave torrentielle (torrent et talweg), Par remontées de nappes naturelles, Par ruissellement et coulée de boue, Par une crue torrentielle ou à montée rapide de cours d'eau, Radon, Risque industriel, Séisme. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Onnion?

Accepted Answer

Out of 85 ADEME EPCs available in Onnion, the most common label is E. 15% are rated A or B.

Question 4

What is the crime rate in Onnion?

Accepted Answer

In 2025, the crime rate in Onnion was 9.2 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 Onnion?

Accepted Answer

Tap water in Onnion is compliant with quality standards. Source: ARS / Hub'eau. (586 analyses over 12 months)

Question 6

What is the air quality in Onnion?

Accepted Answer

According to LCSQA stations (5-year mean) in Onnion: PM2.5 : 10.3 µg/m³, NO₂ : 16.8 µg/m³, PM10 : 16.2 µg/m³. Source: LCSQA / Géod'air.