Natural hazards · Millsboro

Millsboro, DE natural hazards

Most of the natural-hazard damage FEMA expects in Millsboro comes from inland flooding, and overall the risk is low for a U.S. community. Flood insurance has paid 15 claims here since 1991. 5 federal disasters brought FEMA money into town.

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

Expected damage

How exposed is Millsboro?

Low

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Millsboro to be higher than in 31% of U.S. communities, mostly from inland flooding and hurricanes.

Inland flooding36%Hurricanes33%Cold waves22%Everything else9%

By hazard

What Millsboro faces

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

Inland flooding

36% of expected damage

Below average · higher than 25% of U.S. places

Recorded about 3 times a year in the area

Hurricanes

33% of expected damage

Well above average · higher than 87% of U.S. places

Recorded about once every 5 years in the area

Cold waves

22% of expected damage

Above average · higher than 50% of U.S. places

Recorded about once a year in the area

Lower here

Coastal floodingTornadoesHailIce stormsWinter weatherHeat 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 Millsboro flood?

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

15paid claims since 1991

$130Kpaid to owners

1homes flooded more than once

19912026

Biggest named events

Hurricane Sandy: 2 claims, $45K

Homes that flooded again and again

■ FEMA “severe repetitive loss” (0) ■ flooded 2+ times

of homes in flood zones
are insured

of all homes
are insured

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

Insurance rates: Sussex County.

What’s been done with FEMA grants

28homes raised above flood level

Disasters that hit Millsboro

5 federal disasters brought FEMA money here

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

Brought FEMA money into MillsboroDeclared for Sussex County only

2012

Hurricane Sandy

$5K to the Town of Millsboro for repairs

2011

Hurricane Irene

$5K to the Town of Millsboro for repairs

2010

Severe Winter Storms and Snowstorms

$10K to the Town of Millsboro for repairs

2003

Hurricane Isabel

10 households applied for aid $16K aid approved $3K to the Town of Millsboro for repairs

2003

Snow

$2K to the Town of Millsboro for repairs

Sussex County has had 16 natural disasters declared since 1953, most often winter storms and hurricanes.

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. Millsboro covers 1 census tract, combined by population.

Money that reached townFlood claims are matched to Millsboro’s own flood-insurance community; household aid to the registrant’s city; repair grants to the Town of Millsboro. 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 Millsboro total about $1.3M 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.