FloodZoneMap.org

Los Altos, California Flood Zones

Check an Address in Los Altos

Enter any address in Los Altos, California to see its FEMA flood zone

Flood Risk in Los Altos, California

Los Altos has a population of 31,625 residents. Like many communities in California, properties in Los Altos may be located in various FEMA flood zones ranging from high-risk Special Flood Hazard Areas to low-risk zones.

Use the address lookup above to check the specific flood zone for any property in Los Altos. Results come directly from FEMA's National Flood Hazard Layer (NFHL).

Flood Zone Types in Los Altos

FEMA assigns flood zone designations to areas in Los Altos, California:

AE High Risk — 1% annual chance of flooding. Insurance required.

VE Very High Risk — Coastal flooding with wave action.

X (Shaded) Moderate Risk — 500-year floodplain.

X Low Risk — Outside major floodplains.

View all flood zone types →

Flood Insurance in Los Altos

Properties in Los Altos that are in FEMA Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.

Even in low-risk zones, flood insurance is recommended — over 20% of NFIP claims come from outside high-risk areas. Visit FloodSmart.gov for quotes.

View all California flood zone data →