Exton is calmer than 70% of U.S. communities
Most of the natural-hazard damage FEMA expects in Exton comes from inland flooding, and overall the risk is low for a U.S. community.
What stands out about Exton’s weather risks
Read from FEMA’s records below. The page puts what stands out first.
How exposed is Exton?
FEMA expects yearly storm and flood damage to homes and buildings here to be higher than in 30% of U.S. communities, mostly from inland flooding.
Calmer than 1,568 of the 2,558 Pennsylvania towns we cover.
Exton is smaller than a census tract, so it shares the figures of the tract around its center.
Does Exton flood? No paid flood claims on record
FEMA’s records show no paid flood insurance claims in Exton. That’s not a promise: most homes don’t carry flood insurance, so small floods go unrecorded.
Exton isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Chester County.What Exton faces
Each hazard’s share of the damage FEMA expects here, and how it compares with the rest of the country.
Inland flooding
Heat waves
Tornadoes
Federal disasters declared here
None of the disasters declared for Chester County shows FEMA aid or repair money reaching Exton itself in FEMA’s records.
Chester County has had 22 natural disasters declared since 1953, most often hurricanes and floods.
Get ready for what Exton actually faces
A short kit for its top hazards, what to check before you buy, and where neighbors get alerts.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- Know the nearest cooling center or air-conditioned library.
- Drink water before you feel thirsty.
- Check on neighbors who live alone.
- Pick your spot now: the lowest floor, an inside room, no windows.
- A watch means be ready; a warning means take cover now.
- Keep shoes and a flashlight by the bed.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Exton and its neighbors
Exton has the highest rating of the 3 towns around it. Tap a town to see its hazards.
| Town | Rating | Mostly | Flood claims |
|---|---|---|---|
| Exton | Low | inland flooding | 0 |
| West Whiteland | Very low | inland flooding | 63 |
| Uwchlan | Very low | inland flooding | 6 |
Rating = expected yearly storm and flood damage as a share of what’s there, vs. U.S. communities. Flood claims = paid federal flood insurance claims on record.
Most disasters here begin in August–September
The month each of Chester County’s 22 declared disasters began, since 1953.
What these numbers can and can’t tell you
- An average, not a forecast. FEMA’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 there, so a big city isn’t rated riskier just for having more buildings.
- Money that reached town. Flood claims are matched to Exton’s own flood-insurance community; household aid to the registrant’s city; repair grants to Exton.
- It follows property value. FEMA’s model weighs damage to buildings, so a place that recently lost many homes can rate lower than it feels.
Storm stories
Memories, warnings and help from neighbors in Exton.
Your answer becomes a post in Town Square.
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. Preparedness tips: Ready.gov. An average of past damage, not a forecast.