Key West, FL Flood Zone Lookup
Last updated: March 2026
Key West is extremely vulnerable to storm surge and sea level rise, with most of the island sitting only a few feet above sea level. Tidal flooding is an increasing problem, and hurricane storm surge could inundate the entire island.
Monroe County has recorded 27,423 NFIP flood insurance claims since 1978, totaling $708.8M in payouts. Explore the full NFIP claims data by state and county to see how this area compares nationally.
FEMA Region
Region 4
NFIP Policies
36,506
Monroe County
Avg. Premium
$1,969/yr
Monroe County
FEMA Flood Risk Profile: Monroe County
Based on FEMA's National Risk Index, which evaluates flood risk at the county level using historical loss data, exposure, and vulnerability.
Inland Flood Risk
Relatively LowEst. annual loss: $4.7M
Coastal Flood Risk
Very HighEst. annual loss: $21.0M
Hurricane Risk
Relatively HighEst. annual loss: $65.1M
Source: FEMA National Risk Index, county-level assessment. Individual property risk may vary.
Federal Flood Disaster History: Monroe County
Monroe County has been included in 27 federal flood-related disaster declarations.
...and 19 earlier declarations since 2004.
These declarations affected communities across Monroe County, including Key West.
Source: OpenFEMA Disaster Declarations Summaries API. Data sourced February 2026.
NFIP Flood Insurance Claims: Monroe County
Properties in Monroe County have filed 27,423 NFIP flood insurance claims totaling $708.8M in payouts since 1978. The average claim payout is $26K.
Highest-Claim Years
2005
9,186 claims - $335.4M
2017
8,190 claims - $290.5M
1998
7,258 claims - $43.0M
Claims by Flood Zone
Source: OpenFEMA NFIP Claims API. Data sourced March 2026. See national claims data.
Flood Insurance Coverage: Monroe County
Only nearly all households in Monroe County carries NFIP flood insurance (100% of estimated households).
Penetration Rate
100%
nearly all households
Historical Claims Ratio
1 in 1
27,423 claims over 45+ years across 36,506 current policies
Avg. Claim Payout
$25,847
Per claim, county-wide since 1978
Historically, Monroe County has averaged 1 claim for every active policy (since 1978). This compares cumulative claims against today's policy count and does not predict future claim likelihood.
Coverage data: NFIP policies as of March 2026, claims since 1978 (March 2026), population from FEMA NRI. All figures are county-wide and include Key West.
What Your Flood Zone Means in Key West
Key West is primarily at risk from coastal flooding, including hurricane storm surge, tidal flooding, and wave action. Coastal storms can push seawater inland with little warning, and properties in VE (Velocity) zones face the most severe exposure to breaking waves. The most common FEMA flood zone designations in Key West are Zone VE, Zone AE, Zone X. FEMA's National Risk Index estimates the county's annual expected loss from inland flooding at over $4.7M. The county is rated "Very High" for coastal flood risk by FEMA's National Risk Index. Properties in Key West's VE zones face additional wave action risk beyond still-water flooding, which typically results in higher insurance premiums and stricter building requirements.
Coastal flood insurance premiums in Key West are typically higher than inland areas due to the destructive force of storm surge and wave action. Properties in VE zones face the highest premiums because wave damage compounds the risk beyond still-water flooding. If your property is in a Special Flood Hazard Area (SFHA) and you have a federally regulated or government-backed mortgage, federal law generally requires your lender to ensure you carry flood insurance.
Coastal flood maps are among the most frequently updated in the FEMA system, as shoreline erosion and new storm surge modeling refine the boundaries. Letters of Map Revision (LOMR) may shift VE and AE zone boundaries after major storms or updated coastal studies. Use our free lookup tool to check the current flood zone for any Key West address.
Repetitive Loss Properties: Monroe County
Monroe County has 1,250 properties with multiple flood insurance losses, including 119 severe repetitive loss properties. 33 properties have received FEMA mitigation funding. Severe repetitive loss is a subset of multiple loss, not a separate count. Data sourced March 2026.
Multiple Loss
1,250
2+ claims within 10 years
Severe Repetitive Loss
119
4+ claims or 2 exceeding value
Mitigated
33
Received FEMA mitigation
By Flood Zone
Zone data available for 1,247 of 1,250 properties.
Source: OpenFEMA NFIP Multiple Loss Properties. Data sourced March 2026.
Recorded Flood Events: Monroe County
NOAA has recorded 26 flood events in Monroe County since 1996, causing $58K in damage.
Costliest Events
Events by Type
Source: NOAA Storm Events Database, 1996-2026. Data sourced March 2026.
Flood Mitigation: Monroe County
FEMA has funded mitigation for 532 properties in Monroe County, investing $264K in flood risk reduction. Common mitigation actions include acquisition (buying and demolishing flood-prone structures), elevation (raising buildings above flood level), and safe rooms (wind/storm shelters for tornado and hurricane protection).
By Action Type
Source: OpenFEMA Hazard Mitigation Assistance. Data sourced March 2026.
Flood Insurance Discount: Key West
Key West participates in FEMA's Community Rating System (CRS), a voluntary program that rewards communities for flood mitigation efforts beyond minimum NFIP requirements. Residents in the Special Flood Hazard Area may qualify for reduced flood insurance premiums.
CRS Class
Class 5
SFHA Premium Discount
25% off
CRS classes range from 1 (best) to 10 (no discount). Key West's Class 5 rating means NFIP policyholders in the SFHA can receive up to a 25% discount on their flood insurance premiums. Properties outside the SFHA may receive a 10% discount.
Source: FEMA Community Rating System, October 2025. Discounts apply to NFIP policies only.
Key West, FL Flood Zone FAQ
What flood zones are in Key West, FL?
The most common FEMA flood zones in Key West are Zone VE, Zone AE, Zone X. Properties in these high-risk zones (SFHA) may require flood insurance with a federally regulated or government-backed mortgage.
Is flood insurance required in Key West?
If your Key West property is in a Special Flood Hazard Area (SFHA) and you have a federally regulated or government-backed mortgage, federal law generally requires your lender to ensure you carry flood insurance. Properties in Zone X are not federally required to carry flood insurance, though coverage is still recommended since over 40% of all NFIP flood claims come from Zone X properties.
How do I check my flood zone in Key West?
Enter your Key West address in the search tool above for an instant flood zone determination. Results include your FEMA flood zone, SFHA status, base flood elevation (if available), and FIRM panel information, pulled directly from FEMA's National Flood Hazard Layer.
Does Key West offer flood insurance discounts?
Yes. Key West participates in FEMA's Community Rating System (CRS) with a Class 5 rating, qualifying residents in the Special Flood Hazard Area for up to a 25% discount on NFIP flood insurance premiums. Properties outside the SFHA may receive a 10% discount.
Has Key West experienced major flooding events?
Monroe County, where Key West is located, has been part of 27 federal disaster declarations for flooding, hurricanes, or severe storms. The most recent was Hurricane Milton in 2024. Federal disaster declarations are issued when flooding overwhelms local resources and triggers FEMA assistance programs.
How many flood insurance claims have been filed in Key West?
Monroe County has recorded 27,423 NFIP flood insurance claims totaling $708.8M in payouts since 1978. The year with the most claims was 2005, with 9,186 claims and $335.4M in payouts. These figures cover all NFIP claims in the county, including Key West.
How many flood insurance policies are active in Key West?
Monroe County currently has 36,506 active NFIP flood insurance policies with an average annual premium of $1,969. The most policies are in Zone AE (31,360 policies). These figures cover all active NFIP policies in the county.
How many Key West properties have flooded repeatedly?
Monroe County has 1,250 properties with multiple flood losses on record, including 119 severe repetitive loss properties. These are properties that have experienced four or more NFIP claims of $5,000+ or two claims exceeding the building value.
Can my Key West property be removed from a high-risk flood zone?
Yes, if your property's natural ground elevation is above the Base Flood Elevation and FEMA inadvertently mapped it in a high-risk zone, you can apply for a Letter of Map Amendment (LOMA). A successful LOMA removes the property from the Special Flood Hazard Area, generally eliminating the federal mandatory flood insurance requirement. You will need an elevation certificate from a licensed surveyor. If a property was raised above the BFE with fill material, the process is a LOMR-F rather than a LOMA.
What is Base Flood Elevation in Key West?
Base Flood Elevation (BFE) is the predicted height of floodwaters during a 1% annual chance (100-year) flood, shown on FEMA maps as an elevation number in feet above sea level. In Key West's Zone VE and Zone AE areas, BFE lines appear on the FIRM as wavy contours labeled with elevation values. Properties with a lowest floor at or above the BFE typically qualify for significantly lower NFIP flood insurance premiums.
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Disclaimer: Flood risk data on this page is sourced from FEMA datasets including the National Risk Index, NFIP claims and policy records, disaster declarations, and the Community Rating System. These datasets were last extracted on March 2026 and may not reflect the most recent changes. This page is for informational purposes only and is not a certified flood zone determination. Always verify current flood zone status through FEMA or a licensed determination provider before making property, insurance, or lending decisions.