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Jefferson County, Kansas

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

Very Low overall risk
57th of 105highest risk in Kansas
$11Mexpected losses a year
17federal declarations
1 in 200homes with flood insurance
Photo: U.S. Geological Survey, public domain

Jefferson County, Kansas has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 80% of US counties. It ranks 57th of 105 counties in Kansas. The costliest hazards here are inland flooding, tornadoes and heat waves. FEMA estimates about $11 million a year in expected losses, or roughly $625 per resident. Since 1967 it has been included in 17 federal disaster or emergency declarations for natural events (14 major disasters). The most recent was in June 2019 (severe storms, straight-line winds, tornadoes, flooding,landslides,and mudslides). Only 48 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $1.1 million on 49 claims here, including $538,000 for floods in 2019.

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

Top risks in Jefferson County

$6 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.
$1.8 million a yearExpected losses. Damaging events about once every 2 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.
$774,487 a yearExpected losses. Damaging events about 14 times a year.
  • Check that cooling works before summer.
  • Know where the nearest cooling center is.
HazardRatingScoreExpected loss a year
Inland floodingVery Low32.6
$6M
TornadoLow47.8
$2M
Heat waveLow55.7
$774K
Strong windLow39.6
$658K
Cold waveLow26.1
$555K
LightningModerate60.8
$546K
Ice stormModerate67.2
$301K
HailLow36.5
$250K
WildfireLow67.7
$234K
DroughtLow46.4
$182K
Winter weatherLow49.3
$99K
EarthquakeVery Low20.2
$46K
LandslideLow66.6
$7K

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 very high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Severe Storm10
Flood3
Tornado2
Severe Ice Storm1
Hurricane1

Most recent

Jun 20, 2019Severe Storms, Straight-Line Winds, Tornadoes, Flooding,Landslides,And MudslidesMajor disaster
May 28, 2019Tornadoes and FloodingEmergency
Jul 20, 2015Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Mar 9, 2010Severe Winter Storms and SnowstormMajor disaster
Feb 1, 2008Severe Winter StormsMajor disaster
Dec 12, 2007Severe Winter StormsEmergency
Nov 15, 2005Severe Storms and FloodingMajor disaster
Sep 10, 2005Hurricane Katrina EvacuationEmergency
Feb 8, 2005Severe Winter Storms, Heavy Rains, and FloodingMajor disaster
Feb 6, 2002Severe Winter Ice StormMajor disaster
Show all 17
Oct 14, 1998Severe Storms, Flooding and TornadoesMajor disaster
Jul 22, 1993Severe Storms & FloodingMajor disaster
Apr 29, 1991Severe Storms & TornadoesMajor disaster
Sep 20, 1977Severe Storms & FloodingMajor disaster
Sep 28, 1973Severe Storms, Tornadoes & FloodingMajor disaster
May 2, 1973Severe Storms & FloodingMajor disaster
Jul 18, 1967Tornadoes, Severe Storms & FloodingMajor disaster

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

Storm history since 1951

Tornado risk by county ›

The National Weather Service has logged 851 storm reports in Jefferson County since 1951, with 1 death and 24 injuries and about $35.2 million in reported damage. The strongest on record here was an F4 tornado on May 19, 1960.

37tornadoes
379hail reports, largest 4 inches
361damaging thunderstorm winds
72floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
May 19, 1960F4–1 / 0
Apr 26, 1984F3–0 / 0
May 19, 1960F3–1 / 0
May 19, 1960F3–1 / 0
Apr 26, 1991F2–2 / 0

Most damaging storms

DateTypeNearDamage
Apr 26, 1984Tornado–$25M
Apr 26, 1991Tornado–$3M
Oct 2, 2005Flash FloodCountywide$2M
May 18, 1997HailPerry$1M
Jun 29, 1998Thunderstorm WindPerry$700K
Jun 5, 1996TornadoThompsonville$602K

Source: NOAA Storm Events Database, county-based reports through Jun 13, 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 Jefferson County

Check your address flood zone ›
0.5%of homes have federal flood insurance (48 policies)
13.7%of homes in mapped high-risk flood zones are insured
$1.1 millionpaid on 49 flood claims since 1978
2019costliest year, with $538,386 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 Jefferson County

$216,900median home value (Kansas $217,200, US $332,700)
1979median year homes were built (Kansas 1976, US 1980)
52%of homes built before 1980, before many modern wind, quake and flood building rules
7.6%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; 8,038 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
Shawnee CountyModerate15
Douglas CountyLow19
Leavenworth CountyLow21
Atchison CountyVery Low18
Jackson CountyVery Low18

Common questions about Jefferson County

What is the biggest natural hazard in Jefferson County?

Inland flooding has the highest expected yearly losses in Jefferson County, about $6 million a year in FEMA's estimate. Tornado is second at $1.8 million.

How many federal disasters has Jefferson County had?

Jefferson County has been included in 17 federal disaster or emergency declarations for natural events since 1967, including 14 major disasters. The most recent was Severe Storms, Straight-Line Winds, Tornadoes, Flooding,Landslides,And Mudslides in June 2019.

Is Jefferson County a high-risk place to live?

Its overall rating is Very Low, 57th 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 Jefferson County?

Standard home insurance does not cover flooding. About 1 in 200 homes in Jefferson 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 Jefferson County had?

NOAA records list 37 tornadoes in Jefferson County since 1950. The strongest was an F4 tornado on May 19, 1960. The weather service has also logged 379 hail reports and 72 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.