Question 1

What is the population of Hergnies?

Accepted Answer

The commune of Hergnies has 4,471 inhabitants per the INSEE census.

Question 2

Are there natural risks in Hergnies?

Accepted Answer

Yes, Hergnies is exposed to 5 natural risk(s): Affaissement minier, Effondrements généralisés, Engins de guerre, Inondation, Séisme. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Hergnies?

Accepted Answer

Out of 358 ADEME EPCs available in Hergnies, the most common label is C. 4% are rated A or B.

Question 4

What is the crime rate in Hergnies?

Accepted Answer

In 2025, the crime rate in Hergnies was 18.5 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 Hergnies?

Accepted Answer

Tap water in Hergnies is compliant with quality standards. Source: ARS / Hub'eau. (143 analyses over 12 months)

Question 6

What is the air quality in Hergnies?

Accepted Answer

According to LCSQA stations (5-year mean) in Hergnies: PM2.5 : 10.5 µg/m³, NO₂ : 15.6 µg/m³, PM10 : 17.2 µg/m³. Source: LCSQA / Géod'air.