St. Louis, MO real-estate risk
St. Louis, MO (St. Louis County) carries a FEMA National Risk Index score of 98.7/100 — rated "Relatively High" — driven mainly by heat wave and tornado, with roughly $359M in expected natural-hazard losses per year (FEMA NRI, 2025).
Hazard scores (0–100)
Expected annual loss
$359M/yr
all natural hazards, county-wide
Buildings-only loss
$139M/yr
the part that hits owners + insurers
What it means for insurance
Severe convective storms (tornado/hail) drive the insurance cost here — wind/hail deductibles and roof age are what underwriters price, and what's been pushing Midwest/Plains premiums up.
St. Louis risk — FAQ
Is St. Louis, MO a high-risk area for real estate?
St. Louis scores 98.7/100 on FEMA's National Risk Index — rated "Relatively High" versus all US counties. Its expected natural-hazard loss is about $359M per year.
What is the biggest natural hazard in St. Louis?
The highest-rated hazard is heat wave (99.8/100), followed by tornado (98.9/100).
How does hazard risk affect property insurance in St. Louis?
Severe convective storms (tornado/hail) drive the insurance cost here — wind/hail deductibles and roof age are what underwriters price, and what's been pushing Midwest/Plains premiums up.
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Source: FEMA National Risk Index (Counties), v1.20 (2026-06-13). Scores are national percentiles (0–100). Insurance commentary is PropHunt's interpretation of the hazard data, not an insurance quote.
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