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Allen County, Kansas

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

Very Low overall risk
69th of 105highest risk in Kansas
$8Mexpected losses a year
12federal declarations
1 in 111homes with flood insurance
Photo: U.S. Geological Survey, public domain

Allen County, Kansas has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 85% of US counties. It ranks 69th of 105 counties in Kansas. The costliest hazards here are inland flooding, tornadoes and strong wind. FEMA estimates about $7.7 million a year in expected losses, or roughly $618 per resident. Since 1969 it has been included in 12 federal disaster or emergency declarations for natural events (9 major disasters). The most recent was in July 2024 (severe storms, straight-line winds, tornadoes and flooding). Fewer than 1 in 100 homes here carry federal flood insurance (53 policies). Since 1978, federal flood insurance has paid about $3.3 million on 91 claims here, including $2.7 million for floods in 2007.

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

Top risks in Allen County

$3.9 million a yearExpected losses. Damaging events about 2 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.
$867,768 a yearExpected losses. Damaging events about once every 3 years.
  • Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
  • Turn on emergency alerts on your phone and keep a weather radio.
$611,922 a yearExpected losses. Damaging events about 5 times a year.
  • Secure outdoor furniture and trash bins before storms.
  • Have trees near the house checked.
HazardRatingScoreExpected loss a year
Inland floodingVery Low26.3
$4M
TornadoLow35.3
$868K
Strong windLow45.5
$612K
Heat waveLow54.4
$587K
Cold waveLow30.9
$559K
LightningLow48.8
$286K
DroughtLow55.9
$278K
HailLow44.0
$267K
Ice stormLow57.6
$153K
Winter weatherLow58.1
$109K
EarthquakeVery Low28.8
$84K
WildfireVery Low22.4
$11K
HurricaneVery Low16.8
$6K
LandslideVery Low14.4
$73

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 very low and community resilience is relatively moderate in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Severe Storm8
Tornado1
Flood1
Severe Ice Storm1
Hurricane1

Most recent

Jul 15, 2024Severe Storms, Straight-Line Winds, Tornadoes, and FloodingMajor disaster
Oct 26, 2023Severe Storms, Straight-Line Winds, Tornadoes, and FloodingMajor disaster
Jun 20, 2019Severe Storms, Straight-Line Winds, Tornadoes, Flooding,Landslides,And MudslidesMajor disaster
May 28, 2019Tornadoes and FloodingEmergency
Mar 9, 2010Severe Winter Storms and SnowstormMajor disaster
Dec 12, 2007Severe Winter StormsEmergency
Jul 2, 2007Severe Storms and FloodingMajor disaster
Sep 10, 2005Hurricane Katrina EvacuationEmergency
May 6, 2003Severe Storms, Tornadoes, and FloodingMajor disaster
Feb 6, 2002Severe Winter Ice StormMajor disaster
Show all 12
Oct 22, 1986Severe Storms & FloodingMajor disaster
Jul 15, 1969Tornadoes, Severe Storms & FloodingMajor disaster

Kansas also had 10 statewide declarations that did not name single counties.

Storm history since 1950

Tornado risk by county ›

The National Weather Service has logged 447 storm reports in Allen County since 1950, with 0 deaths and 6 injuries and about $17.1 million in reported damage. The strongest on record here was an F2 tornado on March 15, 1982.

26tornadoes
196hail reports, largest 4.25 inches
148damaging thunderstorm winds
55floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Mar 15, 1982F2–0 / 0
Mar 26, 1991F2–1 / 0
Apr 20, 1964F2–0 / 0
Jun 4, 1973F2–0 / 0
Mar 11, 1977F1–0 / 0

Most damaging storms

DateTypeNearDamage
Jul 1, 2007Flash FloodIola$6M
Mar 15, 1982Tornado–$3M
Mar 26, 1991Tornado–$3M
Jul 8, 2009Thunderstorm WindMildred$1M
Oct 6, 2016Thunderstorm WindHumboldt$750K
Oct 6, 2016Flash FloodGas$500K

Source: NOAA Storm Events Database, county-based reports through Jun 18, 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 Allen County

Check your address flood zone ›
0.9%of homes have federal flood insurance (53 policies)
13.8%of homes in mapped high-risk flood zones are insured
$3.3 millionpaid on 91 flood claims since 1978
2007costliest year, with $2.7 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 Allen County

$107,600median home value (Kansas $217,200, US $332,700)
1965median year homes were built (Kansas 1976, US 1980)
72%of homes built before 1980, before many modern wind, quake and flood building rules
9.8%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; 6,077 housing units.

Compare in Kansas

All 105 ›
Largest countiesOverall riskTop hazard
Johnson CountyHighInland flooding
Sedgwick CountyHighInland flooding
Shawnee CountyModerateInland flooding
Wyandotte CountyModerateInland flooding
Douglas CountyLowInland flooding
Leavenworth CountyLowInland flooding
Riley CountyLowInland flooding
Butler CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Neosho CountyVery Low19
Bourbon CountyVery Low16
Linn CountyVery Low17
Wilson CountyVery Low15
Coffey CountyVery Low17
Anderson CountyVery Low16
Woodson CountyVery Low23

Common questions about Allen County

What is the biggest natural hazard in Allen County?

Inland flooding has the highest expected yearly losses in Allen County, about $3.9 million a year in FEMA's estimate. Tornado is second at $867,768.

How many federal disasters has Allen County had?

Allen County has been included in 12 federal disaster or emergency declarations for natural events since 1969, including 9 major disasters. The most recent was Severe Storms, Straight-Line Winds, Tornadoes, and Flooding in July 2024.

Is Allen County a high-risk place to live?

Its overall rating is Very Low, 69th highest of 105 in Kansas. 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 Allen County?

Standard home insurance does not cover flooding. About 1 in 111 homes in Allen 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 Allen County had?

NOAA records list 26 tornadoes in Allen County since 1950. The strongest was an F2 tornado on March 15, 1982. The weather service has also logged 196 hail reports and 55 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.