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Cornwell InnCornwell Inn · Photo: Bill Fitzpatrick · CC BY-SA 3.0
BHazard risk
Natural hazards in Chester · FEMA

FEMA expects about as much hazard damage per building in Chester as in the typical U.S. town, mostly from river and rain flooding

On FEMA’s National Risk Index, Chester gets a B for hazard risk: lower expected damage per building than 58% of U.S. towns, #74 of 169 in South Carolina. Most of that expected damage is river and rain flooding (69%), then tornadoes (11%). Flood insurance has paid 1 claim here since 2025.

Graded on FEMA’s expected yearly building damage per dollar of building value (NRI v1.20, December 2025), weighted by where residents live; flood claims are shown, not graded. How hazard risk is graded

less than 58%of U.S. townsLess damageMoreExpected yearly damage per dollar of building, vs. the 21,298 U.S. towns we grade#74 of 169 in South Carolina
By hazard

What Chester faces

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

River and rain flooding

69%of expected building damage
About average · lower than 52% of U.S. census tracts
Recorded about once every 3 years in the area

Tornadoes

11%of expected building damage
Well above average · higher than 80% of U.S. census tracts

Earthquakes

11%of expected building damage
Above average · higher than 76% of U.S. census tracts
Smaller shares here
 Ice storms top 4% Hurricanes Strong wind Hail Wildfire Lightning Winter storms Cold waves Heat waves Landslides
FEMA models no building damage here
Coastal floodingAvalanchesTsunamisVolcanic activity
People, not buildings.Counting harm to people as well as buildings, FEMA’s model puts tornadoes at 25% of Chester’s expected losses. Tornadoes do little damage to buildings (11.4%), so they aren’t part of the grade.

Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.

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

What’s behind Chester’s grade

River and rain flooding is 69% of the building damage FEMA expects in Chester, and Chester’s rate of river and rain flooding damage is lower than 52% of U.S. census tracts. Ice storms add 5%, at a rate in the top 4% of U.S. census tracts.

Where Chester sits
Chester
Least damageMiddleMost damage

B #74 of 169 in South Carolina; lower expected damage per building than 58% of U.S. towns (21,298).

Chester’s residents live in 4 census tracts; FEMA’s figures are combined by where they live.

What drives the damage to buildings
River and rain flooding69%Tornadoes11%Earthquakes11%Everything else9%

The typical South Carolina town has lower expected damage than 55% of U.S. towns; within the state, Chester has less expected damage per building than 57% of South Carolina towns.

In dollars, FEMA expects about $1.5M a year in losses across Chester: $879K to buildings, the rest to people and crops.

Recent disaster.FEMA’s model looks at expected damage to the buildings standing today. After Hurricane Helene in 2024, FEMA took 1,695 aid registrations from Chester addresses (the town has 2,462 homes).
A small-area figure. Chester covers 4 census tracts, combined by where residents live. FEMA’s model is an average year for today’s buildings, not a record: the claims and disasters below are the record.

How TownRatings grades hazard risk →

Flood insurance claims

Does Chester flood? Rarely: 1 flood claim since 2025

Every paid claim on a federal flood insurance policy in Chester, from FEMA’s records: 0.4 per 1,000 homes, fewer than 92% of the 13,809 U.S. towns with a flood insurance record.

Paid flood claims, by year
2025: 1 claim2026: 0 claims2025
20252026
1
paid claims since 2025
$7K
paid to owners
0
homes flooded more than once
$7K
average claim
of homes in flood zones are insured
of all homes are insured
No community discount

Chester 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.
Disasters

3 federal disasters brought FEMA money to Chester

Disasters that paid out in Chester itself (aid to households or repair grants to the City of Chester), newest first, with that year’s flood claims.

  1. 2024Hurricane Helene1,695 households applied for aid$1.9M aid approved
  2. 2004Tropical Storm Frances16 households applied for aid$14K aid approved
  3. 2000Severe Winter Storm$36K to the City of Chester for repairs
Disasters declared, by decade
Paid out in ChesterChester County only

Chester County has had 17 natural disasters declared by the President since 1953, most often hurricanes and tropical storms, then severe storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.

Were you here?

Old photos of Chester after a storm or flood belong in the town’s history. Add one, or share what you remember below.

Add to the Chester archive →
Next door

Chester and its neighbors

Chester is 2nd of the 2 graded towns here, from least expected damage per building to most. Tap a town to see its hazards.

Lowest fifthSecondMiddleFourthHighest fifth
TownHazard riskMostly (buildings)Flood claims
Eureka MillB+less damage than 70%river and rain flooding—
ChesterBless damage than 58%river and rain flooding1
Gayle Mill—974 residents; we grade 1,000+

Hazard risk = FEMA’s expected yearly building damage per dollar of building value, vs. the 21,298 U.S. towns we grade; the map is shaded by fifths of the same scale. Flood claims = paid federal flood insurance claims on record.

Be ready

Get ready for what Chester faces

A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.

When the river rises
  • 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.
More from Ready.gov ↗
Tornado warnings
  • 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.
More from Ready.gov ↗
Earthquakes
  • Drop, cover and hold on.
  • Strap tall furniture and the water heater to the wall.
  • Know how to shut off the gas.
More from Ready.gov ↗
Before you buy or rent
  • 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.
When a storm is coming
Forecast and alertsWeather →911, the nearest ERSafety →

Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.

Questions about natural hazards in Chester

Is Chester at risk for natural disasters?

On FEMA’s National Risk Index, Chester has lower expected damage per building than 58% of U.S. towns: B for hazard risk, #74 of 169 in South Carolina. Most of the expected damage is river and rain flooding (69%) and tornadoes (11%). This is FEMA’s model of an average year for today’s buildings, not a forecast.

Does Chester flood?

Flood insurance has paid 1 claim in Chester since 2025, $7K in all, or 0.4 per 1,000 homes, fewer than 92% of U.S. towns with a flood insurance record.

Is Chester in a flood zone?

Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Chester County, 14% of homes in mapped flood zones carry federal flood insurance, and 0.2% of all homes do.

How much is flood insurance in Chester?

FEMA’s Community Rating System list shows no discount for Chester’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.

What was the biggest storm in Chester?

By FEMA money that reached Chester, Hurricane Helene (2024): 1,695 households applied for aid, $1.9M approved.

Is Chester at risk from river and rain flooding?

It is the largest share of the building damage FEMA expects here (69%), and Chester’s rate for it is lower than 52% of U.S. census tracts.

Storm stories

Memories, warnings and help from neighbors in Chester.

Town Square →
Start the conversation

Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Chester’s residents lived in the 2020 census; 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. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.