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Polk County, Oregon

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

Relatively Low overall risk
20th of 36highest risk in Oregon
$38Mexpected losses a year
13federal declarations
1 in 83homes with flood insurance
Photo: U.S. Geological Survey, CC0

Polk County, Oregon has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 73% of US counties. It ranks 20th of 36 counties in Oregon. The costliest hazards here are earthquakes, inland flooding and heat waves. FEMA estimates about $38 million a year in expected losses, or roughly $434 per resident. Since 1964 it has been included in 13 federal disaster or emergency declarations for natural events (12 major disasters). The most recent was in April 2026 (severe storms, straight-line winds, flooding, landslides and mudslides). About 1 in 83 homes here carry federal flood insurance (359 policies). Since 1978, federal flood insurance has paid about $852,000 on 78 claims here.

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

Top risks in Polk County

Earthquake

Moderate
$19.4 million a yearExpected losses. Damaging events about once every 50 years.
  • Ask whether an older house is bolted to its foundation.
  • Consider separate earthquake insurance where risk is high.
$14.7 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.

Heat wave

Moderate
$3 million a yearExpected losses. Damaging events about 6 times a year.
  • Check that cooling works before summer.
  • Know where the nearest cooling center is.
HazardRatingScoreExpected loss a year
EarthquakeModerate95.4
$19M
Inland floodingLow68.2
$15M
Heat waveModerate87.4
$3M
Ice stormModerate64.5
$196K
Cold waveVery Low15.2
$187K
LightningLow33.9
$153K
TornadoVery Low12.7
$124K
Strong windVery Low11.6
$105K
Winter weatherLow34.4
$44K
WildfireVery Low43.4
$38K
LandslideLow83.9
$31K
HailVery Low7.4
$25K
Volcanic activityVery Low84.0
$2K
AvalancheVery Low14.6
$22
DroughtVery Low12.4
$2

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 high in FEMA's measures.

Federal disaster history

Recent disasters nationwide ›

Declarations by decade

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

By type

Severe Storm8
Flood4
Coastal Storm1

Most recent

Apr 7, 2026Severe Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disaster
May 4, 2021Severe Winter StormMajor disaster
Feb 17, 2016Severe Winter Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disaster
Mar 2, 2012Severe Winter Storm, Flooding, Landslides, and MudslidesMajor disaster
Mar 2, 2009Severe Winter Storm, Record and Near Record SnowMajor disaster
Dec 8, 2007Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Feb 22, 2007Severe Winter Storm and FloodingMajor disaster
Mar 20, 2006Severe Storms, Flooding, Landslides, and MudslidesMajor disaster
Sep 7, 2005Hurricane Katrina EvacuationEmergency
Feb 19, 2004Severe Winter StormsMajor disaster
Show all 13
Feb 9, 1996High Winds, Severe Storms and FloodingMajor disaster
Jan 25, 1974Severe Storms, Snowmelt & FloodingMajor disaster
Dec 24, 1964Heavy Rains & FloodingMajor disaster

Oregon also had 42 statewide declarations that did not name single counties.

Storm history since 1996

Tornado risk by county ›

The National Weather Service has logged 49 storm reports in Polk County since 1996 and about $4.4 million in reported damage. The strongest on record here was an F1 tornado on June 21, 2003 near Independence.

3tornadoes
0hail reports
3damaging thunderstorm winds
27floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 21, 2003F1Independence0 / 0
Sep 15, 1997F0Mc Coy0 / 0
Sep 15, 1997F0Rickreall0 / 0

Most damaging storms

DateTypeNearDamage
Jan 18, 2012FloodBuena Vista$3M
Dec 4, 2007FloodSuver$1M
Dec 8, 2015FloodSuver$225K
Dec 8, 2015FloodSuver$95K
Dec 18, 2015FloodSuver$75K
Sep 15, 1997TornadoMc Coy$5K

Source: NOAA Storm Events Database, county-based reports through Feb 24, 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 Polk County

Check your address flood zone ›
1.2%of homes have federal flood insurance (359 policies)
30.1%of homes in mapped high-risk flood zones are insured
$851,650paid on 78 flood claims since 1978
2007costliest year, with $342,213 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 Polk County

$454,700median home value (Oregon $477,600, US $332,700)
1990median year homes were built (Oregon 1981, US 1980)
41%of homes built before 1980, before many modern wind, quake and flood building rules
6.2%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; 34,867 housing units.

Compare in Oregon

All 36 ›
Largest countiesOverall riskTop hazard
Multnomah CountyHighEarthquake
Washington CountyHighEarthquake
Clackamas CountyHighEarthquake
Lane CountyHighInland flooding
Marion CountyHighEarthquake
Jackson CountyModerateInland flooding
Deschutes CountyModerateInland flooding
Linn CountyModerateEarthquake

Neighboring counties

CountyOverall riskDeclarations
Marion CountyHigh13
Linn CountyModerate19
Yamhill CountyModerate17
Benton CountyModerate13
Lincoln CountyModerate21
Tillamook CountyModerate22

Cities in Polk County

Common questions about Polk County

What is the biggest natural hazard in Polk County?

Earthquake has the highest expected yearly losses in Polk County, about $19.4 million a year in FEMA's estimate. Inland flooding is second at $14.7 million.

How many federal disasters has Polk County had?

Polk County has been included in 13 federal disaster or emergency declarations for natural events since 1964, including 12 major disasters. The most recent was Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides in April 2026.

Is Polk County a high-risk place to live?

Its overall rating is Relatively Low, 20th highest of 36 in Oregon. 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 Polk County?

Standard home insurance does not cover flooding. About 1 in 83 homes in Polk 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 Polk County had?

NOAA records list 3 tornadoes in Polk County since 1950. The strongest was an F1 tornado on June 21, 2003 near Independence. The weather service has also logged 0 hail reports and 27 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.