Houston, TX Flood Zone Lookup
Last updated: March 2026
Houston is one of the most flood-prone major cities in the United States, facing risk from hurricane storm surge, bayou flooding, and extreme rainfall. Hurricane Harvey in 2017 dropped over 50 inches of rain on parts of the metro area, with over 60 inches recorded in nearby Southeast Texas, causing unprecedented flooding.
Harris County has recorded 170,766 NFIP flood insurance claims since 1978, totaling $8.7B in payouts. Explore the full NFIP claims data by state and county to see how this area compares nationally.
FEMA Region
Region 6
NFIP Policies
262,391
Harris County
Avg. Premium
$931/yr
Harris County
FEMA Flood Risk Profile: Harris 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
Very HighEst. annual loss: $1.1B
Coastal Flood Risk
Relatively HighEst. annual loss: $2.5M
Hurricane Risk
Very HighEst. annual loss: $457.9M
Source: FEMA National Risk Index, county-level assessment. Individual property risk may vary.
Federal Flood Disaster History: Harris County
Harris County has been included in 25 federal flood-related disaster declarations.
...and 17 earlier declarations since 1989.
These declarations affected communities across Harris County, including Houston.
Source: OpenFEMA Disaster Declarations Summaries API. Data sourced February 2026.
NFIP Flood Insurance Claims: Harris County
Properties in Harris County have filed 170,766 NFIP flood insurance claims totaling $8.7B in payouts since 1978. The average claim payout is $51K.
Highest-Claim Years
2017
49,785 claims - $5.4B
2001
22,946 claims - $869.8M
2008
13,716 claims - $420.1M
Claims by Flood Zone
Source: OpenFEMA NFIP Claims API. Data sourced March 2026. See national claims data.
Flood Insurance Coverage: Harris County
Only roughly 1 in 7 households in Harris County carries NFIP flood insurance (14% of estimated households). This county has elevated flood risk with below-average insurance coverage, meaning many flood losses may go uninsured.
Penetration Rate
14%
roughly 1 in 7 households
Historical Claims Ratio
1 in 2
170,766 claims over 45+ years across 262,391 current policies
Avg. Claim Payout
$51,180
Per claim, county-wide since 1978
Historically, Harris County has averaged 1 claim for every 2 active policies (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 Houston.
What Your Flood Zone Means in Houston
Houston faces a combination of coastal and inland flood risks. Storm surge from hurricanes and tropical storms pushes seawater inland, while heavy rainfall simultaneously overwhelms rivers, bayous, and drainage infrastructure. This dual threat means flooding can come from multiple directions at once. The most common FEMA flood zone designations in Houston are Zone AE, Zone AO, Zone VE, Zone X. FEMA's National Risk Index estimates the county's annual expected loss from inland flooding at over $1.1B. Properties in Houston's VE zones face additional wave action risk beyond still-water flooding, which typically results in higher insurance premiums and stricter building requirements. Houston has Zone AO areas subject to sheet-flow flooding, where shallow water spreads across broad, flat terrain rather than channeling through waterways.
Combined coastal and inland flood exposure in Houston means properties may face higher premiums than areas with only one flood source. FEMA's Risk Rating 2.0 accounts for multiple flood sources, including coastal surge distance, river proximity, and rainfall-driven 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.
Flood maps in areas with combined coastal and inland risk are among the most complex in the FEMA system. Major storms often trigger FEMA restudies that can significantly shift zone boundaries. Letters of Map Revision (LOMR) after hurricanes may expand SFHA coverage as new storm data is incorporated. Use our free lookup tool to check the current flood zone for any Houston address.
Repetitive Loss Properties: Harris County
Harris County has 19,894 properties with multiple flood insurance losses, including 3,736 severe repetitive loss properties. 1,208 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
19,894
2+ claims within 10 years
Severe Repetitive Loss
3,736
4+ claims or 2 exceeding value
Mitigated
1,208
Received FEMA mitigation
By Flood Zone
Zone data available for 19,751 of 19,894 properties.
Source: OpenFEMA NFIP Multiple Loss Properties. Data sourced March 2026.
Recorded Flood Events: Harris County
NOAA has recorded 224 flood events in Harris County since 1996, causing $10.3B in damage and 70 deaths.
Costliest Events
Events by Type
Source: NOAA Storm Events Database, 1996-2026. Data sourced March 2026.
Flood Mitigation: Harris County
FEMA has funded mitigation for 6,500 properties in Harris County, investing $349.3M 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: Houston
Houston 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). Houston'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.
Houston, TX Flood Zone FAQ
What flood zones are in Houston, TX?
The most common FEMA flood zones in Houston are Zone AE, Zone AO, Zone VE, 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 Houston?
If your Houston 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 Houston?
Enter your Houston 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 Houston offer flood insurance discounts?
Yes. Houston 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 Houston experienced major flooding events?
Harris County, where Houston is located, has been part of 25 federal disaster declarations for flooding, hurricanes, or severe storms. The most recent was Hurricane Beryl 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 Houston?
Harris County has recorded 170,766 NFIP flood insurance claims totaling $8.7B in payouts since 1978. The year with the most claims was 2017, with 49,785 claims and $5.4B in payouts. These figures cover all NFIP claims in the county, including Houston.
How many flood insurance policies are active in Houston?
Harris County currently has 262,391 active NFIP flood insurance policies with an average annual premium of $931. The most policies are in Zone X (187,175 policies). These figures cover all active NFIP policies in the county.
How many Houston properties have flooded repeatedly?
Harris County has 19,894 properties with multiple flood losses on record, including 3,736 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 Houston 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 Houston?
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 Houston's Zone AE and Zone VE 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.
Other Texas Cities
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Look Up Any Houston, TX Address
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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.