St. Mary Parish, Louisiana

St. Mary Parish, Louisiana has a moderate overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 89% of US counties. It ranks 14th of 64 parishes in Louisiana. The costliest hazards here are hurricanes, coastal flooding and inland flooding. FEMA estimates about $61 million a year in expected losses, or roughly $1,230 per resident. Since 1965 it has been included in 45 federal disaster or emergency declarations for natural events (26 major disasters). The most recent was in January 2026 (severe winter storm). About 1 in 8 homes here carry federal flood insurance (2,543 policies). Since 1978, federal flood insurance has paid about $37 million on 2,532 claims here.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively high and community resilience is very high in FEMA's measures.

The National Weather Service has logged 195 storm reports in St. Mary Parish since 1952, with 0 deaths and 31 injuries and about $41 million in reported damage. The strongest on record here was an F3 tornado on March 17, 1970.

Source: NOAA Storm Events Database, county-based reports through May 23, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Since 1856, 30 hurricanes and 23 tropical storms have passed within 65 miles of the center of St. Mary Parish, 25 of them since 1950. The strongest was an unnamed hurricane in 1856, with top winds near 150 mph about 62 miles away.

Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 22,507 housing units.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole parish, not a single property, and are not insurance or safety advice. Report a problem.