Buying a home in Siano
9,496 residents at the 2021 census, 1,278 buildings and 8.6 km² of territory, Campania.
Siano is in seismic zone 2: in this zone strong earthquakes are possible. According to ISPRA’s mosaic, 78% of the territory of Siano has high or very high landslide hazard (P3 and P4), with 4.6% of the residents. 2.5% of the territory of Siano is in the flood area of the medium-probability scenario (P2), with 2% of the residents.
Find your address in Siano
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Siano compared
| ISPRA indicator | Siano | SA | Campania |
|---|---|---|---|
| Landslide, very high hazard (P4) | 74.8% | 5.8% | 9.5% |
| Landslide, high hazard (P3) | 3.2% | 16.8% | 10.1% |
| Landslide, areas of attention | 0% | 23.3% | 22% |
| Residents in landslide areas P3-P4 | 4.6% | 8.3% | 4.7% |
| Buildings in landslide areas P3-P4 | 28.3% | 13.2% | 9.2% |
| Flood, high probability (P3) | 2.5% | 2% | 2.5% |
| Flood, medium probability (P2) | 2.5% | 3.7% | 5.7% |
| Flood, low probability (P1) | 2.5% | 4% | 6.2% |
| Residents in P2 flood areas | 2% | 10% | 5.1% |
| Buildings in P2 flood areas | 1.7% | 6.5% | 5.9% |
Questions
Which seismic zone is Siano in?
Siano is in seismic zone 2: in this zone strong earthquakes are possible.
How much of Siano is in landslide class P3/P4?
According to ISPRA’s mosaic, 78% of the territory of Siano has high or very high landslide hazard (P3 and P4), with 4.6% of the residents. By share of territory with landslide hazard P3-P4, Siano ranks 14th of 158 municipalities in the province of Salerno.
How much of Siano is in flood scenario P2?
2.5% of the territory of Siano is in the flood area of the medium-probability scenario (P2), with 2% of the residents. By share of territory in the P2 flood area, Siano ranks 57th of 158 municipalities in the province of Salerno, tied with 1 others.
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 |
|---|---|---|---|
| Bracigliano | 2 | 65.1% | 9% |
| Castel San Giorgio | 2 | 37.4% | 15.9% |
| Mercato San Severino | 2 | 45.3% | 12.3% |
| Roccapiemonte | 2 | 39.9% | 14.8% |
| Quindici | 2 | 68.7% | 5.1% |
| Sarno | 2 | 43.4% | 6% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on