Free · U.S. addresses · FEMA, USGS and NOAA data

Is this home in a flood zone?

Type an address to see the FEMA flood zone, how high the ground sits compared with the 100-year flood, the flood insurance claims history for the ZIP code, and what to do next.

Tip: new or rural addresses sometimes aren't in public address data. Use “Drop a pin on the map” to check any spot.

More than a flood zone

Most free tools stop at a zone code. Aeonis Flood explains what it means for this property.

FEMA flood zone

Zone, risk level and whether lenders must require flood insurance, from FEMA's live National Flood Hazard Layer. We warn you when a higher-risk zone is within about 200 ft.

Ground vs. flood height

Ground elevation from the USGS 3D Elevation Program compared with the base flood elevation, with datum conversion from NOAA, so you can see how many feet of margin there is.

Claims next door

National Flood Insurance Program claims on record for the ZIP code since 1978: how many, how much was paid, the worst years, and the share from outside high-risk zones.

Disaster history

FEMA disaster declarations for the county since 2000, map panel and effective date, community rating discounts and nearby map amendments.

Built for the people who ask first.

Home buyers checking before an offer. Realtors answering “is it in a flood zone?” on the spot. Insurance agents sizing up a quote. Landlords preparing disclosures. Share a link or save a PDF.

Coming in Pro (join early access)

  • Your logo and contact details on every report
  • Batch lookups: upload a spreadsheet of addresses
  • A flood-check form for your website that sends you leads
  • Saved addresses with weekly FEMA map-change checks
  • Team plan: up to 10 agent profiles

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Aeonis Flood Pro

For realtors, insurance agents, lenders and property managers. Free reports stay free.

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Questions

Is this an official flood zone determination?

No. It's an information report built automatically from FEMA's public National Flood Hazard Layer and other government data at the pin location. Lenders rely on a Standard Flood Hazard Determination Form (FEMA Form 086-0-32) from a certified provider, and insurers may need an Elevation Certificate from a licensed surveyor.

Why does the pin matter?

Address points are often placed on the street rather than the building. Near a zone boundary that can change the result, so drag the pin onto the building and press “Check this spot”. We also warn you when a higher-risk zone is within about 200 ft.

What do the zones mean?

A, AE, AH, AO and V/VE zones are high-risk Special Flood Hazard Areas (1% or greater annual chance). Shaded X (or B) is moderate risk (0.2% annual chance). Unshaded X (or C) is minimal mapped risk. D means undetermined. Full guide to flood zones.

My address isn't found. What can I do?

Pick a suggestion as you type, add the city and state or ZIP, or use “Drop a pin on the map” or “Use my location”. New construction and rural routes are sometimes missing from public address data.

Does a low-risk zone mean it won't flood?

No. Heavy rain and drainage problems flood homes in every zone. The claims section shows how many local flood insurance claims came from outside high-risk zones.

Is it free?

Yes. Reports are free during early access, with a daily fair-use limit. Paid Pro features for professionals aren't available yet. If we launch them, free reports will stay available and nothing is charged unless you choose a plan.

Where does the data come from?

FEMA National Flood Hazard Layer and OpenFEMA (NFIP claims, disaster declarations, Community Status Book), USGS 3D Elevation Program, NOAA VDatum, U.S. Census Bureau geocoder, and OpenStreetMap for address suggestions. Sources, methods and limits.