Daly City, CA— fire, flood & earthquake hazard information
Daly City is a city in San Mateo County in the San Francisco Bay Area, covering about 7.6 square miles. This page summarizes what official government maps show for Daly City: CAL FIRE fire hazard severity zones, FEMA flood zones, state seismic hazard zones, dam inundation areas, airport noise contours, and air-quality indicators. Figures are the share of Daly City’s area that falls inside each mapped zone.
View Daly City on the interactive map → to check any specific address, free.
Wildfire hazard severity zones
CAL FIRE's current Fire Hazard Severity Zone maps do not designate any zones within Daly City. Individual properties near the boundary can still fall inside a neighboring zone — check the exact address on the map.
FEMA flood zones
1% is in a coastal high hazard zone (V/VE). Federally backed mortgages in a Special Flood Hazard Area generally require flood insurance.
| Coastal high hazard (V/VE) | 1% |
Earthquake faults & seismic zones
The nearest mapped fault, the Serra fault zone, is about 0.6 mi (0.9 km) from the center of Daly City. 2 named fault traces in the USGS Quaternary fault database cross its boundary. 11% of its area is in a state-designated liquefaction zone of required investigation. 18% is in an earthquake-induced landslide zone. 4% falls within an Alquist-Priolo earthquake fault zone, where new construction requires a fault study.
| Nearest mapped fault | Serra fault zone — 0.6 mi (0.9 km) |
| Named fault traces crossing boundary | 2 |
| Liquefaction zone | 11% |
| Earthquake-induced landslide zone | 18% |
| Alquist-Priolo fault zone | 4% |
Dam inundation, aircraft noise & air quality
6% is inside an airport noise contour of 65 dB CNEL or louder; annual average fine-particle (PM2.5) concentration across its census tracts is 8.5 μg/m³, and its composite pollution burden ranks around the 33th percentile statewide.
| Airport noise ≥65 dB CNEL | 6% |
| Annual PM2.5 (tract average) | 8.5 μg/m³ |
| Pollution burden percentile (statewide) | ~33 |
Frequently asked questions
- Is Daly City in a wildfire hazard severity zone?
- CAL FIRE's current Fire Hazard Severity Zone maps do not designate any zones within Daly City. Individual properties near the boundary can still fall inside a neighboring zone — check the exact address on the map.
- Is Daly City in a FEMA flood zone?
- 1% is in a coastal high hazard zone (V/VE). Federally backed mortgages in a Special Flood Hazard Area generally require flood insurance.
- What earthquake faults and seismic zones affect Daly City?
- The nearest mapped fault, the Serra fault zone, is about 0.6 mi (0.9 km) from the center of Daly City. 2 named fault traces in the USGS Quaternary fault database cross its boundary. 11% of its area is in a state-designated liquefaction zone of required investigation. 18% is in an earthquake-induced landslide zone. 4% falls within an Alquist-Priolo earthquake fault zone, where new construction requires a fault study.
- How do I check a specific address in Daly City?
- Use the free sitelume interactive map at https://sitelume.com — search any Daly City address to see which mapped zones it falls in, layer by layer.
Nearby in San Mateo County
Sources: CAL FIRE Fire Hazard Severity Zones; FEMA National Flood Hazard Layer; USGS Quaternary Faults; CGS Seismic Hazard Zones & Alquist-Priolo zones; Cal OES dam inundation maps; county ALUC noise contours; CalEnviroScreen 4.0. Area shares are computed against each place’s Census TIGER boundary (last computed 2026-07-24). Boundaries and zone designations change; always verify with the issuing agency.