Updated May 2026
Flood Risk in Montgomery, TX
Montgomery, TX has a Flood Risk Score of 16/100 (Grade A), ranking #443 of 3,277 counties nationwide. The risk level is Low. There have been 967 NFIP flood-insurance claims totaling $74,056,455 in payouts, with 19 federal disaster declarations on record.
Key Data
What the Grade Means Here
Montgomery sits in the lowest-risk tier in the FEMA dataset — composite score 16, ranked #443 of 3,277 counties (where #1 is the riskiest). The county has logged 967 NFIP flood-insurance claims and 19 federal flood-related disaster declarations to date. An A grade does not mean zero risk: flash floods, sewer backups, and rare extreme storms can still cause loss, and FEMA reports more than 25% of all NFIP payouts originate from properties outside Special Flood Hazard Areas.
Within Texas, Montgomery carries flood risk roughly typical of the state, where the average composite score is 12. The county ranks #27 of 255 state-internally. The full Texas state profile shows how every county within the state compares.
What's Driving the Risk Score?
The single biggest driver of the composite score in this county is federal disaster frequency (25% of the formula, factor score 40). For Montgomery, that means the cadence of federally declared flood-related disasters dominates — large enough events to exceed state and local response capacity have repeated multiple times.
The trend factor is low (6 of 100), suggesting flood-loss volume has been stable or declining over the dataset window. This is a positive signal — the historical average remains the best estimate of forward risk.
Score Breakdown
| Factor | Score | Weight |
|---|---|---|
| Claims Density | 8 | 40% |
| Disaster Frequency | 40 | 25% |
| Claim Severity | 7 | 20% |
| Year-over-Year Trend | 6 | 15% |
How This Score Is Calculated
The composite is a weighted average of four FEMA-derived factors. Source data comes from the public FEMA flood-mapping program via the OpenFEMA API. For property-level decisions, layer this with the parcel's FEMA Flood Insurance Rate Map zone and recent crest readings from USGS Water Data. Full math: methodology page.
Frequently Asked Questions
What is the flood risk in Montgomery, TX?
Montgomery, TX has a Flood Risk Score of 16/100 (Grade A), ranking #443 of 3,277 counties nationwide. The risk level is Low. There have been 967 NFIP flood-insurance claims totaling $74,056,455 in payouts, with 19 federal disaster declarations on record.
Is flood insurance required in Montgomery?
Federal law requires flood insurance for any property in a Special Flood Hazard Area (FEMA Zone A or V) financed by a federally regulated lender. Montgomery's county-wide composite score is 16 (Grade A), which is a county aggregate — your specific parcel's flood-zone designation comes from the FEMA Flood Insurance Rate Map (FIRM) at fema.gov/flood-maps. Even when not legally required, NFIP coverage is often available for a few hundred dollars a year in moderate- and low-risk zones, and FEMA reports more than 25% of all NFIP claims come from outside high-risk zones.
What is driving the flood risk score in Montgomery?
The single biggest driver of the composite score in this county is federal disaster frequency (25% of the formula, factor score 40). For Montgomery, that means the cadence of federally declared flood-related disasters dominates — large enough events to exceed state and local response capacity have repeated multiple times.
Is flood risk increasing or decreasing in Montgomery?
The trend factor is low (6 of 100), suggesting flood-loss volume has been stable or declining over the dataset window. This is a positive signal — the historical average remains the best estimate of forward risk.
How does Montgomery compare to other counties in Texas?
Within Texas, Montgomery carries flood risk roughly typical of the state, where the average composite score is 12. The county ranks #27 of 255 state-internally.
Where does this data come from?
Every figure on this page comes from FEMA's public OpenFEMA API — the DisasterDeclarationsSummaries v2 endpoint (federally declared flood-related disasters) and the FimaNfipClaims endpoint (individual NFIP flood-insurance claims aggregated by county FIPS code). Both are public-domain U.S. government work. Real-time stream-gauge readings that complement these federal aggregates live at USGS Water Data. Last updated 2026-05-16.
Montgomery, TX has a Flood Risk Score of 16/100 (Grade A), ranking #443 of 3,277 counties nationwide. The risk level is Low. There have been 967 NFIP flood-insurance claims totaling $74,056,455 in payouts, with 19 federal disaster declarations on record.
This answer pulls from FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims, the authoritative federal source for U.S. flood risk, NFIP claims, and disaster declarations. The headline number above is the direct answer; what follows is the additional context most readers need to use the answer for a real decision rather than just a fact lookup.
A practical caveat: the headline answer above reflects the most recent FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims vintage; underlying data is often revised for months after first publication, and the right reference for any specific decision is whichever vintage is current at the time of the decision. The as-of date is stamped on every page.