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Park County, Wyoming

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

Relatively Low overall risk
6th of 23highest risk in Wyoming
$20Mexpected losses a year
2federal declarations
1 in 500homes with flood insurance
Photo: U.S. Geological Survey, public domain

Park County, Wyoming has a relatively low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is higher than 58% of US counties. It ranks 6th of 23 counties in Wyoming. The costliest hazards here are inland flooding, cold waves and earthquakes. FEMA estimates about $20 million a year in expected losses, or roughly $670 per resident. Since 1978 it has been included in 2 federal disaster or emergency declarations for natural events (2 major disasters). The most recent was in August 2017 (flooding). Only 35 homes here carry federal flood insurance. Since 1978, federal flood insurance has paid about $349,000 on 19 claims here.

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

Top risks in Park County

$9.3 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.

Cold wave

Moderate
$5.1 million a yearExpected losses. Damaging events about once a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
$1.4 million a yearExpected losses. Damaging events about once every 20 years.
  • Ask whether an older house is bolted to its foundation.
  • Consider separate earthquake insurance where risk is high.
HazardRatingScoreExpected loss a year
Inland floodingLow60.8
$9M
Cold waveModerate85.0
$5M
EarthquakeLow78.2
$1M
AvalancheHigh86.8
$1M
LightningHigh85.0
$934K
WildfireLow82.7
$555K
TornadoVery Low25.9
$386K
LandslideModerate97.2
$333K
Strong windLow29.2
$287K
HailLow36.4
$156K
Winter weatherModerate64.5
$106K
DroughtLow38.3
$57K
Heat waveVery Low8.2
$13K
Ice stormVery Low14.4
$9K
Volcanic activityVery Low44.0
$8

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 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 Park County. 2020s bar runs to November 2026.

By type

Flood2

Most recent

Aug 5, 2017FloodingMajor disaster
May 29, 1978Severe Storms, Flooding & MudslidesMajor disaster

Wyoming also had 5 statewide declarations that did not name single counties.

Storm history since 1955

Tornado risk by county ›

The National Weather Service has logged 200 storm reports in Park County since 1955, with 1 death and 9 injuries and about $28 million in reported damage. The strongest on record here was an F2 tornado on June 26, 1964.

10tornadoes
67hail reports, largest 2 inches
77damaging thunderstorm winds
28floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
Jun 26, 1964F2–0 / 0
Jul 11, 1978F2–0 / 0
Aug 25, 1986F1–0 / 0
Jun 26, 1976F1–0 / 0
May 18, 1991F1–0 / 0

Most damaging storms

DateTypeNearDamage
Jun 12, 2022FloodMt Washburn$25M
Jul 30, 2013HailRalston$1M
Jun 9, 2000HailPowell$500K
Jul 10, 2001Flash FloodClark$400K
Jul 16, 2002Flash FloodSouth Portion$275K
Jul 3, 2023Thunderstorm WindCanyon$200K

Source: NOAA Storm Events Database, county-based reports through Jul 15, 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 Park County

Check your address flood zone ›
0.2%of homes have federal flood insurance (35 policies)
2.6%of homes in mapped high-risk flood zones are insured
$349,467paid on 19 flood claims since 1978
1997costliest year, with $136,757 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 Park County

$400,500median home value (Wyoming $309,700, US $332,700)
1983median year homes were built (Wyoming 1981, US 1980)
46%of homes built before 1980, before many modern wind, quake and flood building rules
7.9%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; 14,989 housing units.

Compare in Wyoming

All 23 ›
Largest countiesOverall riskTop hazard
Laramie CountyLowInland flooding
Natrona CountyLowInland flooding
Campbell CountyLowCold wave
Sweetwater CountyVery LowInland flooding
Fremont CountyLowInland flooding
Albany CountyLowInland flooding
Sheridan CountyLowInland flooding
Park CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Gallatin County, MTModerate7
Fremont CountyLow4
Teton CountyLow3
Park County, MTLow12
Big Horn CountyVery Low2
Carbon County, MTLow11
Washakie CountyVery Low3
Hot Springs CountyVery Low2

Common questions about Park County

What is the biggest natural hazard in Park County?

Inland flooding has the highest expected yearly losses in Park County, about $9.3 million a year in FEMA's estimate. Cold wave is second at $5.1 million.

How many federal disasters has Park County had?

Park County has been included in 2 federal disaster or emergency declarations for natural events since 1978, including 2 major disasters. The most recent was Flooding in August 2017.

Is Park County a high-risk place to live?

Its overall rating is Relatively Low, 6th highest of 23 in Wyoming. 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 Park County?

Standard home insurance does not cover flooding. About 1 in 500 homes in Park 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 Park County had?

NOAA records list 10 tornadoes in Park County since 1950. The strongest was an F2 tornado on June 26, 1964. The weather service has also logged 67 hail reports and 28 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.