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Flood zone · California

Flood zone in California

Flood zone (FEMA NFHL) data for ZIP codes in California. Pick a ZIP below to dive into the flood zone summary.

Last verified 2026-09-24 · methodology

What lands here

Not on zipradar yet. The plan is the FEMA flood zone code, what it means in plain English, and the base flood elevation where assigned. Until then, look the address up on FEMA's Flood Map Service Center.

Source & refresh

FEMA NFHL. Refreshed quarterly loma updates. Primary source →

California top concern

Wildfire (WUI), seismic, water-supply variability

California carries the highest concentrated WUI wildfire risk in the US per USFS WHP, with FAIR Plan + non-renewal pressure intensifying since 2017 fires. FEMA NFHL coverage is strong; drinking-water systems vary from large urban (LADWP, EBMUD) to small disadvantaged community systems flagged in EPA SDWIS. Radon risk is mostly Zone 2-3.

See California state page for the full state-level rollup across all 12 dimensions.

Read more on flood zone

Editorial deep-dives explaining the source data, its limits, and how to read it.

29 California ZIPs