Natural hazards · Chantilly

Chantilly, VA natural hazards

Most of the natural-hazard damage FEMA expects in Chantilly comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 4 claims here since 2005. 1 federal disaster brought FEMA money into town.

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

Expected damage

How exposed is Chantilly?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Chantilly to be higher than in 37% of U.S. communities, mostly from inland flooding.

Inland flooding76%Hurricanes8%Everything else16%

By hazard

What Chantilly faces

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

Inland flooding

76% of expected damage

Above average · higher than 61% of U.S. places

Recorded about 6 times a year in the area

Hurricanes

8% of expected damage

Above average · higher than 74% of U.S. places

Recorded about once every 10 years in the area

Lower here

TornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

Coastal floodingDroughtAvalanchesTsunamisVolcanic 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 Chantilly flood?

Every paid claim on a federal flood insurance policy in Chantilly, from FEMA’s records.

4paid claims since 2005

$37Kpaid to owners

0homes flooded more than once

20052026

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Fairfax County.

Disasters that hit Chantilly

1 federal disaster brought FEMA money here

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

Brought FEMA money into ChantillyDeclared for Fairfax County only

2003

Hurricane Isabel

4 households applied for aid

Fairfax County has had 17 natural disasters declared since 1953, most often winter storms and hurricanes.

Around Chantilly

Chantilly and the towns around it

Very lowLowModerateHighVery high

Bull Runmostly inland floodingModerate

Centrevillemostly inland floodingModerate

Chantillymostly inland floodingLow

Greenbriarmostly inland floodingLow

Franklin Farmmostly inland floodingLow

Navymostly inland floodingLow

Sully Squaremostly inland floodingVery low

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. Chantilly covers 5 census tracts, combined by population.

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

FEMA’s expected losses across Chantilly total about $6.9M a year, counting buildings, people and crops.

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.