Question 1

What is the population of Oncy-sur-École?

Accepted Answer

The commune of Oncy-sur-École has 1,037 inhabitants per the INSEE census.

Question 2

Are there natural risks in Oncy-sur-École?

Accepted Answer

Yes, Oncy-sur-École is exposed to 1 natural risk(s): Inondation. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Oncy-sur-École?

Accepted Answer

Out of 91 ADEME EPCs available in Oncy-sur-École, the most common label is D. 8% are rated A or B.

Question 4

What is the crime rate in Oncy-sur-École?

Accepted Answer

In 2025, the crime rate in Oncy-sur-École was 16.3 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 Oncy-sur-École?

Accepted Answer

Tap water in Oncy-sur-École is compliant with quality standards. Source: ARS / Hub'eau. (86 analyses over 12 months)

Question 6

What is the air quality in Oncy-sur-École?

Accepted Answer

According to LCSQA stations (5-year mean) in Oncy-sur-École: PM2.5 : 8.8 µg/m³, NO₂ : 18.3 µg/m³, PM10 : 13.9 µg/m³. Source: LCSQA / Géod'air.