How do I check if a Los Angeles address is in a FEMA flood zone?

Short answer: Enter the address on FEMA’s Flood Map Service Center (msc.fema.gov), which shows the effective Flood Insurance Rate Map (FIRM) and the flood zone at the pin. Zones starting with A or V are FEMA’s high-risk Special Flood Hazard Area. Los Angeles County Public Works also runs a Flood Zone Determination Website for addresses in the county.

Look it up

  1. Go to FEMA’s Flood Map Service Center and enter the Los Angeles address.
  2. Check that the pin sits on your building, not the street. Zone boundaries can run through a lot or along a road, so the pin’s position matters.
  3. Read the zone label at the pin, and note the map number and effective date shown.
  4. For a second look, use Los Angeles County Public Works’ Flood Zone Determination Website.

What the zone labels mean

From FEMA’s flood zone definitions:

  1. Zone A, AE, AH, AO, V, VE (and similar): Special Flood Hazard Area, "the area that will be inundated by the flood event having a 1-percent chance of being equaled or exceeded in any given year," also called the 100-year flood.
  2. Zone B or Zone X (shaded): moderate flood hazard, between the 1% and the 0.2%-annual-chance (500-year) flood limits.
  3. Zone C or Zone X (unshaded): minimal flood hazard, outside the SFHA and higher than the 0.2%-annual-chance flood elevation.
  4. Zone D: federal regulations (44 CFR 64.3(a)(1)) describe it as an "Area of undetermined but possible, flood hazards."

A zone is not the whole story

FEMA’s Flood Map Service Center notes: "Whether you are in a high risk zone or not, you may need flood insurance because most homeowners insurance doesn’t cover flood damage." If you are buying, ask your lender or insurance agent how the property is classified for insurance.

What Ground Report checks here, and what it doesn’t

The free score checks:

  • A live check of FEMA’s National Flood Hazard Layer at the geocoded point for the street address.
  • A flood finding only when that point is inside a FEMA high-risk (1% annual chance) area, a 0.2% annual chance area, or Zone D.

It does not check:

  • Minimal-hazard (unshaded X) areas, unmapped areas and failed lookups. These show no flood finding, and no finding does not mean the home is outside a flood zone.
  • Exactly where your building sits. The geocoded point can land on a different side of a zone boundary than the building itself, so check FEMA’s map.
  • Official flood zone determinations for lenders or insurance, and Los Angeles County’s own flood zone records.

Get a free score for a street address

Sources

Sources last reviewed 2026-10-28. Quotes are taken from the linked pages. This page is general information, not a home inspection, a water test or an official flood determination.

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