Updated May 2026
Flood Risk in Calcasieu, LA
Calcasieu, LA has a Flood Risk Score of 36/100 (Grade B), ranking #12 of 3,277 counties nationwide. The risk level is Moderate. There have been 665 NFIP flood-insurance claims totaling $27,506,631 in payouts, with 33 federal disaster declarations on record.
Key Data
What the Grade Means Here
Calcasieu carries a B grade — modest but non-trivial flood risk. With a composite score of 36 and 665 NFIP claims on file, the county sits in the second-safest tier of the U.S. distribution (rank #12 of 3,277). Most insured loss here clusters in localized low-elevation neighborhoods or river-adjacent corridors rather than across the whole county.
Within Louisiana, Calcasieu runs 12 points above the state average composite score of 24 — meaningfully more flood-exposed than the typical county in the state. Rank: #6 of 65. The full Louisiana 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 70). For Calcasieu, 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 high (100 of 100), meaning flood losses have been accelerating sharply in this county. That is the single most actionable signal in the score — recent risk is meaningfully greater than the long-run average suggests.
Score Breakdown
| Factor | Score | Weight |
|---|---|---|
| Claims Density | 6 | 40% |
| Disaster Frequency | 70 | 25% |
| Claim Severity | 3 | 20% |
| Year-over-Year Trend | 100 | 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 Calcasieu, LA?
Calcasieu, LA has a Flood Risk Score of 36/100 (Grade B), ranking #12 of 3,277 counties nationwide. The risk level is Moderate. There have been 665 NFIP flood-insurance claims totaling $27,506,631 in payouts, with 33 federal disaster declarations on record.
Is flood insurance required in Calcasieu?
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. Calcasieu's county-wide composite score is 36 (Grade B), 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 Calcasieu?
The single biggest driver of the composite score in this county is federal disaster frequency (25% of the formula, factor score 70). For Calcasieu, 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 Calcasieu?
The trend factor is high (100 of 100), meaning flood losses have been accelerating sharply in this county. That is the single most actionable signal in the score — recent risk is meaningfully greater than the long-run average suggests.
How does Calcasieu compare to other counties in Louisiana?
Within Louisiana, Calcasieu runs 12 points above the state average composite score of 24 — meaningfully more flood-exposed than the typical county in the state. Rank: #6 of 65.
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.
Calcasieu, LA has a Flood Risk Score of 36/100 (Grade B), ranking #12 of 3,277 counties nationwide. The risk level is Moderate. There have been 665 NFIP flood-insurance claims totaling $27,506,631 in payouts, with 33 federal disaster declarations on record.
The data source behind this answer is FEMA OpenFEMA datasets including the National Flood Hazard Layer and NFIP claims. Every figure on the page traces back to that source; the methodology page describes the inputs and the refresh cadence in full detail.
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.