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Bremer County, Iowa

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

Very Low overall risk
76th of 99highest risk in Iowa
$15Mexpected losses a year
15federal declarations
1 in 91homes with flood insurance
Photo: U.S. Geological Survey, public domain

Bremer County, Iowa has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 75% of US counties. It ranks 76th of 99 counties in Iowa. The costliest hazards here are inland flooding, tornadoes and drought. FEMA estimates about $15 million a year in expected losses, or roughly $615 per resident. Since 1965 it has been included in 15 federal disaster or emergency declarations for natural events (14 major disasters). The most recent was in March 2019 (severe storms and flooding). About 1 in 91 homes here carry federal flood insurance (107 policies). Since 1978, federal flood insurance has paid about $15 million on 643 claims here, including $12 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 Bremer County

$7.1 million a yearExpected losses. Damaging events about once 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.
$2.5 million 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.

Drought

Moderate
$2.4 million a yearExpected losses. Damaging events about 16 times a year.
  • Check local water restrictions.
  • Choose drought-tolerant plants.
HazardRatingScoreExpected loss a year
Inland floodingVery Low33.4
$7M
TornadoLow52.3
$2M
DroughtModerate86.2
$2M
Strong windLow50.2
$1M
Cold waveLow36.0
$1M
HailLow69.2
$993K
Winter weatherLow52.6
$129K
Heat waveVery Low18.4
$96K
LightningVery Low8.1
$48K
Ice stormVery Low26.2
$46K
EarthquakeVery Low14.3
$28K
WildfireVery Low22.9
$17K
HurricaneVery Low8.4
$2K
LandslideVery Low24.3
$330

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 Bremer County. 2020s bar runs to November 2026.

By type

Flood8
Severe Storm6
Hurricane1

Most recent

Mar 23, 2019Severe Storms and FloodingMajor disaster
Aug 27, 2017Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Oct 31, 2016Severe Storms and FloodingMajor disaster
May 27, 2008Severe Storms, Tornadoes, and FloodingMajor disaster
Mar 14, 2007Severe Winter StormsMajor disaster
Sep 10, 2005Hurricane Katrina EvacuationEmergency
May 25, 2004Severe Storms, Tornadoes, and FloodingMajor disaster
Jul 22, 1999Severe Storms and FloodingMajor disaster
May 21, 1999Severe Storms, Flooding, and TornadoesMajor disaster
Jul 9, 1993Severe Storms & FloodingMajor disaster
Show all 15
Jul 12, 1991Severe Storms & FloodingMajor disaster
Sep 6, 1990Severe Storms & FloodingMajor disaster
Aug 14, 1969Heavy Rains & FloodingMajor disaster
Aug 4, 1968Heavy Rains & FloodingMajor disaster
Apr 22, 1965FloodingMajor disaster

Iowa also had 11 statewide declarations that did not name single counties.

Storm history since 1956

Tornado risk by county ›

The National Weather Service has logged 389 storm reports in Bremer County since 1956, with 0 deaths and 12 injuries and about $38.6 million in reported damage. The strongest on record here was an F4 tornado on September 1, 1961.

29tornadoes
128hail reports, largest 2.75 inches
151damaging thunderstorm winds
45floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Sep 1, 1961F4–0 / 0
Apr 10, 1981F2–0 / 0
Jul 14, 2021EF2Babcock0 / 0
Jul 12, 1971F2–0 / 0
Jul 16, 1977F2–0 / 0

Most damaging storms

DateTypeNearDamage
Jun 12, 2010FloodPlainfield$20M
Sep 1, 1961Tornado–$3M
Apr 10, 1981Tornado–$3M
Jul 23, 2010Flash FloodDenver$1M
Jul 14, 2021TornadoBabcock$1M
May 16, 1999Flash FloodWaverly$750K

Source: NOAA Storm Events Database, county-based reports through Sep 22, 2025. 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 Bremer County

Check your address flood zone ›
1.1%of homes have federal flood insurance (107 policies)
17.8%of homes in mapped high-risk flood zones are insured
$14.8 millionpaid on 643 flood claims since 1978
2008costliest year, with $12.4 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 Bremer County

$219,600median home value (Iowa $208,000, US $332,700)
1970median year homes were built (Iowa 1972, US 1980)
68%of homes built before 1980, before many modern wind, quake and flood building rules
1.6%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; 10,585 housing units.

Compare in Iowa

All 99 ›
Largest countiesOverall riskTop hazard
Polk CountyModerateInland flooding
Linn CountyModerateInland flooding
Scott CountyModerateInland flooding
Johnson CountyModerateTornado
Black Hawk CountyLowInland flooding
Woodbury CountyModerateInland flooding
Dallas CountyLowInland flooding
Dubuque CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Black Hawk CountyLow18
Buchanan CountyVery Low23
Fayette CountyLow20
Floyd CountyLow18
Butler CountyVery Low23
Chickasaw CountyVery Low17

Common questions about Bremer County

What is the biggest natural hazard in Bremer County?

Inland flooding has the highest expected yearly losses in Bremer County, about $7.1 million a year in FEMA's estimate. Tornado is second at $2.5 million.

How many federal disasters has Bremer County had?

Bremer County has been included in 15 federal disaster or emergency declarations for natural events since 1965, including 14 major disasters. The most recent was Severe Storms and Flooding in March 2019.

Is Bremer County a high-risk place to live?

Its overall rating is Very Low, 76th highest of 99 in Iowa. 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 Bremer County?

Standard home insurance does not cover flooding. About 1 in 91 homes in Bremer 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 Bremer County had?

NOAA records list 29 tornadoes in Bremer County since 1950. The strongest was an F4 tornado on September 1, 1961. The weather service has also logged 128 hail reports and 45 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.