Buying a home in San Costanzo
4,554 residents at the 2021 census, 1,648 buildings and 40.9 km² of territory, Marche.
San Costanzo is in seismic zone 2: in this zone strong earthquakes are possible. According to ISPRA’s mosaic, 12.3% of the territory of San Costanzo has high or very high landslide hazard (P3 and P4), with 3.4% of the residents. 0% of the territory of San Costanzo is in the flood area of the medium-probability scenario (P2), with 0% of the residents.
Find your address in San Costanzo
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San Costanzo compared
| ISPRA indicator | San Costanzo | PU | Marche |
|---|---|---|---|
| Landslide, very high hazard (P4) | 0% | 1.4% | 0.7% |
| Landslide, high hazard (P3) | 12.3% | 6.4% | 6.9% |
| Landslide, areas of attention | 0% | 0% | 0% |
| Residents in landslide areas P3-P4 | 3.4% | 1.5% | 1.9% |
| Buildings in landslide areas P3-P4 | 2.7% | 1.8% | 2.7% |
| Flood, high probability (P3) | -1% | 0.1% | 0.1% |
| Flood, medium probability (P2) | 0% | 2.9% | 2.7% |
| Flood, low probability (P1) | 16.2% | 3.9% | 4% |
| Residents in P2 flood areas | 0% | 6.5% | 5.2% |
| Buildings in P2 flood areas | 0% | 7.1% | 5.7% |
Questions
Which seismic zone is San Costanzo in?
San Costanzo is in seismic zone 2: in this zone strong earthquakes are possible.
How much of San Costanzo is in landslide class P3/P4?
According to ISPRA’s mosaic, 12.3% of the territory of San Costanzo has high or very high landslide hazard (P3 and P4), with 3.4% of the residents. By share of territory with landslide hazard P3-P4, San Costanzo ranks 18th of 50 municipalities in the province of Pesaro e Urbino.
How much of San Costanzo is in flood scenario P2?
0% of the territory of San Costanzo is in the flood area of the medium-probability scenario (P2), with 0% of the residents. In the province of Pesaro e Urbino, 6 of 50 municipalities have no territory in the P2 flood area.
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 |
|---|---|---|---|
| Mondolfo | 2 | 0.8% | 7.8% |
| Monte Porzio | 2 | 20.3% | 3% |
| Fano | 2 | 2.2% | 8.1% |
| Trecastelli | 2 | 5.5% | 6.6% |
| Terre Roveresche | 2 | 23.6% | 0.3% |
| Mondavio | 2 | 20% | 2.5% |
Sources: ISPRA IdroGEO, Civil Protection, Istat (25 October 2026).
Updated on