Natural hazards · Hahnville

Hahnville, LA natural hazards

Most of the natural-hazard damage FEMA expects in Hahnville comes from hurricanes, and overall the risk is very high for a U.S. community. 6 federal disasters brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Hahnville?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Hahnville to be higher than in 93% of U.S. communities, mostly from hurricanes.

Hurricanes66%Inland flooding9%Tornadoes7%Everything else17%

By hazard

What Hahnville faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Hurricanes

66% of expected damage

Well above average · among the top 1% of U.S. places

Recorded about once every 4 years in the area

Inland flooding

9% of expected damage

Well below average · higher than 13% of U.S. places

Recorded about 2 times a year in the area

Tornadoes

7% of expected damage

Above average · higher than 63% of U.S. places

Recorded about once every 50 years in the area

Lower here

Coastal floodingHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightningDrought

Not a risk here

AvalanchesTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Hahnville flood?

FEMA's records show no paid flood insurance claims in Hahnville.

of all homes
are insured

No community discount. Hahnville isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.

Insurance rates: St. Charles Parish.

What’s been done with FEMA grants

4storm safe rooms built

2buildings retrofitted against wind

1homes raised above flood level

Disasters that hit Hahnville

6 federal disasters brought FEMA money here

Disasters the President declared that paid out in Hahnville itself: aid to households, or repair grants to Hahnville.

Brought FEMA money into HahnvilleDeclared for St. Charles Parish only

2024

Hurricane Francine

200 households applied for aid $300K aid approved

2021

Hurricane Ida

1,366 households applied for aid $3.6M aid approved

2012

Hurricane Isaac

342 households applied for aid $167K aid approved

2008

Hurricane Gustav

571 households applied for aid $206K aid approved

2005

Hurricane Katrina

1,528 households applied for aid $2.4M aid approved

2004

Hurricane Ivan

48 households applied for aid $7K aid approved

St. Charles Parish has had 39 natural disasters declared since 1953, most often hurricanes and floods.

Around Hahnville

Hahnville and the towns around it

Very lowLowModerateHighVery high

Lulingmostly hurricanesVery high

Destrehanmostly hurricanesVery high

Hahnvillemostly hurricanesVery high

Taftmostly hurricanesVery high

Norcomostly hurricanesVery high

New Sarpymostly hurricanesVery high

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Hahnville is smaller than a census tract, so it shares the figures of the tract around its center.

Money that reached townFlood claims are matched to Hahnville’s own flood-insurance community; household aid to the registrant’s city; repair grants to Hahnville. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

Sources: FEMA National Risk Index (December 2025); OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Census tracts: U.S. Census Bureau.