Buying a home in Castronno
5,039 residents at the 2021 census, 1,580 buildings and 3.8 km² of territory, Lombardia.
Castronno is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low. According to ISPRA’s mosaic, 0% of the territory of Castronno has high or very high landslide hazard (P3 and P4), with 0% of the residents. 12.9% of the territory of Castronno is in the flood area of the medium-probability scenario (P2), with 3.5% of the residents.
Find your address in Castronno
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Castronno compared
| ISPRA indicator | Castronno | VA | Lombardia |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0% | 1.5% | 3.7% |
| Landslide, high hazard (P3) | 0% | 0.6% | 2.9% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 0% | 0.3% | 0.4% |
| Buildings in landslide areas P3-P4 | 0% | 0.4% | 1.1% |
| Flood, high probability (P3) | 6.6% | 10.8% | 7.9% |
| Flood, medium probability (P2) | 12.9% | 13.1% | 10.2% |
| Flood, low probability (P1) | 14.3% | 16% | 20.3% |
| Residents in P2 flood areas | 3.5% | 2.2% | 4.4% |
| Buildings in P2 flood areas | 3.5% | 2.3% | 4.7% |
Questions
Which seismic zone is Castronno in?
Castronno is in seismic zone 4: the least hazardous zone: the probability of an earthquake is very low.
How much of Castronno is in landslide class P3/P4?
According to ISPRA’s mosaic, 0% of the territory of Castronno has high or very high landslide hazard (P3 and P4), with 0% of the residents. In the province of Varese, 60 of 136 municipalities have no territory with landslide hazard P3-P4.
How much of Castronno is in flood scenario P2?
12.9% of the territory of Castronno is in the flood area of the medium-probability scenario (P2), with 3.5% of the residents. By share of territory in the P2 flood area, Castronno ranks 36th of 136 municipalities in the province of Varese.
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 |
|---|---|---|---|
| Brunello | 4 | 0% | 4.9% |
| Caronno Varesino | 4 | 0.1% | 1.7% |
| Morazzone | 4 | 0% | 0% |
| Sumirago | 4 | 0% | 0% |
| Albizzate | 4 | 0% | 7.5% |
| Azzate | 4 | 0.6% | 9% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on