Buying a home in Châtillon
4,402 residents at the 2021 census, 1,705 buildings and 39.7 km² of territory, Valle d’Aosta/Vallée d’Aoste.
Châtillon is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2. According to ISPRA’s mosaic, 81.8% of the territory of Châtillon has high or very high landslide hazard (P3 and P4), with 12.3% of the residents. 4.8% of the territory of Châtillon is in the flood area of the medium-probability scenario (P2), with 4.6% of the residents.
Find your address in Châtillon
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Châtillon compared
| ISPRA indicator | Châtillon | AO | Valle d'Aosta/Vallée d'Aoste |
|---|---|---|---|
| Landslide, very high hazard (P4) | 36.5% | 48.9% | 48.9% |
| Landslide, high hazard (P3) | 45.3% | 34.8% | 34.8% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 12.3% | 10.9% | 10.9% |
| Buildings in landslide areas P3-P4 | 23.5% | 22.6% | 22.6% |
| Flood, high probability (P3) | 3.8% | 5% | 5% |
| Flood, medium probability (P2) | 4.8% | 7.3% | 7.3% |
| Flood, low probability (P1) | 5.9% | 9.2% | 9.2% |
| Residents in P2 flood areas | 4.6% | 9.1% | 9.1% |
| Buildings in P2 flood areas | 4.9% | 11.1% | 11.1% |
Questions
Which seismic zone is Châtillon in?
Châtillon is in seismic zone 3: in this zone strong earthquakes are less likely than in zones 1 and 2.
How much of Châtillon is in landslide class P3/P4?
According to ISPRA’s mosaic, 81.8% of the territory of Châtillon has high or very high landslide hazard (P3 and P4), with 12.3% of the residents. By share of territory with landslide hazard P3-P4, Châtillon ranks 39th of 74 municipalities in the province of Valle d’Aosta.
How much of Châtillon is in flood scenario P2?
4.8% of the territory of Châtillon is in the flood area of the medium-probability scenario (P2), with 4.6% of the residents. By share of territory in the P2 flood area, Châtillon ranks 52nd of 74 municipalities in the province of Valle d’Aosta.
Guides: seismic zone · landslides and floods · what to check before an offer. OMI prices: GEOPOI (how to read them).
Nearby municipalities
| Municipality | Seismic zone | Landslide P3-P4 | Flood P2 |
|---|---|---|---|
| Saint-Vincent | 3 | 55.5% | 4% |
| Saint-Denis | 3 | 38.4% | 2.3% |
| Pontey | 3 | 70.4% | 9.7% |
| Antey-Saint-André | 3 | 63% | 14% |
| Montjovet | 3 | 79.3% | 11.5% |
| La Magdeleine | 3 | 93.8% | 6.2% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on