Question 1

What is the population of Yffiniac?

Accepted Answer

The commune of Yffiniac has 4,980 inhabitants per the INSEE census.

Question 2

Are there natural risks in Yffiniac?

Accepted Answer

Yes, Yffiniac is exposed to 11 natural risk(s): Inondation, Mouvement de terrain, Par submersion marine, Par une crue à débordement lent de cours d'eau, Phénomène lié à l'atmosphère, Radon, Recul du trait de côte et de falaises, Séisme, Tassements différentiels, Tempête et grains (vent), Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Yffiniac?

Accepted Answer

Out of 373 ADEME EPCs available in Yffiniac, the most common label is C. 9% are rated A or B.

Question 4

What is the crime rate in Yffiniac?

Accepted Answer

In 2025, the crime rate in Yffiniac was 24 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 Yffiniac?

Accepted Answer

Tap water in Yffiniac is compliant with quality standards. Source: ARS / Hub'eau. (342 analyses over 12 months)

Question 6

What is the air quality in Yffiniac?

Accepted Answer

According to LCSQA stations (5-year mean) in Yffiniac: PM2.5 : 7.1 µg/m³, NO₂ : 7.6 µg/m³, PM10 : 14.4 µg/m³. Source: LCSQA / Géod'air.