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Hancock County, Illinois

Natural disaster risk, federal disaster history and flood insurance facts.

Very Low overall risk
78th of 102highest risk in Illinois
$8Mexpected losses a year
17federal declarations
1 in 143homes with flood insurance
Photo: U.S. Geological Survey, public domain

Hancock County, Illinois has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 69% of US counties. It ranks 78th of 102 counties in Illinois. The costliest hazards here are inland flooding, cold waves and heat waves. FEMA estimates about $8.4 million a year in expected losses, or roughly $476 per resident. Since 1973 it has been included in 17 federal disaster or emergency declarations for natural events (14 major disasters). The most recent was in August 2023 (severe storms and flooding). Only 48 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $5.9 million on 288 claims here, including $3.0 million for floods in 2008.

FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.

Top risks in Hancock County

$2.4 million a yearExpected losses. Damaging events about 3 times a year.
  • Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
  • Price a flood policy now. Most new federal policies take 30 days to start.

Cold wave

Moderate
$1.6 million a yearExpected losses. Damaging events about 4 times a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.

Heat wave

Moderate
$1.3 million a yearExpected losses. Damaging events about 9 times a year.
  • Check that cooling works before summer.
  • Know where the nearest cooling center is.
HazardRatingScoreExpected loss a year
Inland floodingVery Low24.2
$2M
Cold waveModerate67.1
$2M
Heat waveModerate80.4
$1M
DroughtModerate84.1
$986K
Strong windModerate67.2
$742K
TornadoLow34.5
$550K
HailLow65.6
$385K
LightningModerate58.2
$259K
EarthquakeVery Low40.6
$132K
Ice stormLow46.8
$61K
Winter weatherLow39.0
$37K
HurricaneVery Low24.8
$8K
LandslideLow71.6
$6K
WildfireVery Low1.4
$482

Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is relatively high and community resilience is relatively high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

Federal declarations for natural events that included Hancock County. 2020s bar runs to November 2026.

By type

Flood8
Severe Storm4
Snowstorm3
Tornado1
Hurricane1

Most recent

Aug 15, 2023Severe Storms and FloodingMajor disaster
Sep 19, 2019Severe Storms and FloodingMajor disaster
May 10, 2013Severe Storms, Straight-Line Winds, and FloodingMajor disaster
Mar 17, 2011Severe Winter Storm and SnowstormMajor disaster
Jun 24, 2008Severe Storms and FloodingMajor disaster
Dec 29, 2006SnowEmergency
Sep 7, 2005Hurricane Katrina EvacuationEmergency
May 15, 2003Severe Storms, Tornadoes, and FloodingMajor disaster
May 21, 2002Severe Storms, Tornadoes and FloodingMajor disaster
May 9, 2001FloodingMajor disaster
Show all 17
Jan 8, 1999Il-Winter Storm 1/1/99Emergency
May 6, 1996Severe Storms and FloodingMajor disaster
Jul 9, 1993Severe Storms & FloodingMajor disaster
Aug 21, 1987Severe Storms & FloodingMajor disaster
Mar 29, 1985Severe Storms & FloodingMajor disaster
Jun 10, 1974Severe Storms & FloodingMajor disaster
Apr 26, 1973Severe Storms & FloodingMajor disaster

Illinois also had 2 statewide declarations that did not name single counties.

Storm history since 1955

Tornado risk by county ›

The National Weather Service has logged 513 storm reports in Hancock County since 1955, with 0 deaths and 21 injuries and about $42.6 million in reported damage. The strongest on record here was an F4 tornado on May 13, 1995 near Niota.

34tornadoes
177hail reports, largest 3 inches
219damaging thunderstorm winds
78floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
May 13, 1995F4Niota7 / 0
Apr 8, 1999F3Warsaw0 / 0
Apr 13, 1974F3–0 / 0
Sep 30, 1973F3–0 / 0
Apr 13, 1974F2–10 / 0

Most damaging storms

DateTypeNearDamage
Apr 8, 1999TornadoWarsaw$15M
May 13, 1995TornadoNiota$10M
Jul 18, 2003Thunderstorm WindNauvoo$4M
Apr 13, 1974Tornado–$3M
Apr 13, 1974Tornado–$3M
Jun 21, 1981Tornado–$3M

Source: NOAA Storm Events Database, county-based reports through Jul 20, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.

Flood insurance in Hancock County

Check your address flood zone ›
0.7%of homes have federal flood insurance (48 policies)
19.7%of homes in mapped high-risk flood zones are insured
$5.9 millionpaid on 288 flood claims since 1978
2008costliest year, with $3 million paid

National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.

Homes in Hancock County

$113,800median home value (Illinois $263,300, US $332,700)
1964median year homes were built (Illinois 1971, US 1980)
74%of homes built before 1980, before many modern wind, quake and flood building rules
6%of homes are mobile homes, which are the least safe in tornadoes and high winds

Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 8,938 housing units.

Compare in Illinois

All 102 ›
Largest countiesOverall riskTop hazard
Cook CountyVery HighInland flooding
DuPage CountyHighInland flooding
Lake CountyHighInland flooding
Will CountyHighInland flooding
Kane CountyHighInland flooding
McHenry CountyModerateInland flooding
Winnebago CountyModerateInland flooding
Madison CountyModerateInland flooding

Neighboring counties

CountyOverall riskDeclarations
Adams CountyLow19
Lee County, IALow20
McDonough CountyVery Low9
Lewis County, MOVery Low25
Schuyler CountyVery Low16
Clark County, MOVery Low25
Henderson CountyVery Low14

Common questions about Hancock County

What is the biggest natural hazard in Hancock County?

Inland flooding has the highest expected yearly losses in Hancock County, about $2.4 million a year in FEMA's estimate. Cold wave is second at $1.6 million.

How many federal disasters has Hancock County had?

Hancock County has been included in 17 federal disaster or emergency declarations for natural events since 1973, including 14 major disasters. The most recent was Severe Storms and Flooding in August 2023.

Is Hancock County a high-risk place to live?

Its overall rating is Very Low, 78th highest of 102 in Illinois. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.

Do I need flood insurance in Hancock County?

Standard home insurance does not cover flooding. About 1 in 143 homes in Hancock County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.

How many tornadoes has Hancock County had?

NOAA records list 34 tornadoes in Hancock County since 1950. The strongest was an F4 tornado on May 13, 1995 near Niota. The weather service has also logged 177 hail reports and 78 floods here.

Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.