Flood history · Katy, TX 77450
Flood insurance claims in Katy, TX 77450
1,619 claims since 1978 and $189.0 million paid. Here's what the public record shows, and how to check a specific address.
Claims by year
Every NFIP flood insurance claim reported in ZIP 77450 since 1978.
What the record says
About 99% of claims here were on properties rated outside high-risk zones (zones X, B or C). A lower-risk zone on the map is not a guarantee.
One event dominates the record: Hurricane Harvey accounts for 69% of all claims in this ZIP code.
Flooding here is recent: 1,192 claims (74%) were in the last 10 years.
The most commonly recorded cause is heavy rain or snowmelt collecting faster than it drains, which can happen far from any river or coast.
Harris County* takes part in FEMA's Community Rating System (class 7), which can lower flood insurance premiums by up to 15% in high-risk zones.
Biggest flood events
| Event | Year | Claims | Share |
|---|---|---|---|
| Hurricane Harvey | 2017 | 1,113 | 69% |
| Unnamed flooding | 1983 | 118 | 7% |
| Spring Storm | 2009 | 95 | 6% |
| Tropical Storm Imelda | 2019 | 32 | 2% |
| Spring severe storms | 2016 | 27 | 2% |
| Hurricane Ike | 2008 | 22 | 1% |
Flood zone at time of claim
NFIP communities
Federal disaster declarations in Harris County
Flood, hurricane and storm declarations since 2000.
16 flood, storm or hurricane declarations for Harris County since 2000.
Check a specific address in Katy.
ZIP-level history is the backdrop. See the official FEMA flood zone, ground elevation and next steps for one property, free.
Sources: FEMA OpenFEMA NFIP Redacted Claims (v3) and Disaster Declarations Summaries, FEMA NFIP Community Status Book; place names from GeoNames (CC BY 4.0). Data as of 2026-10-09. Payments are net building + contents payments in dollars at the time paid, not adjusted for inflation. Claims are grouped by the ZIP code reported on the claim. This product uses the FEMA OpenFEMA API but is not endorsed by FEMA. Information only; not an official flood zone determination or insurance advice.