Dallas County, Missouri
Natural disaster risk, federal disaster history and flood insurance facts.
Dallas County, Missouri has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 58% of US counties. It ranks 71st of 115 counties in Missouri. The costliest hazards here are inland flooding, ice storms and tornadoes. FEMA estimates about $10 million a year in expected losses, or roughly $613 per resident. Since 1973 it has been included in 23 federal disaster or emergency declarations for natural events (17 major disasters). The most recent was in July 2020 (severe storms, tornadoes, straight-line winds and flooding). Only 6 homes here carry federal flood insurance.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Dallas County
- 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.
- Trim branches that hang over the roof or power lines.
- Plan for several days without power.
- 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.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 37.9 | $4M | ||
| Ice storm | 97.5 | $2M | ||
| Tornado | 60.4 | $1M | ||
| Heat wave | 71.5 | $784K | ||
| Lightning | 83.6 | $690K | ||
| Strong wind | 53.7 | $492K | ||
| Cold wave | 35.5 | $432K | ||
| Earthquake | 59.1 | $347K | ||
| Drought | 60.4 | $232K | ||
| Wildfire | 73.5 | $183K | ||
| Hail | 43.1 | $162K | ||
| Winter weather | 55.7 | $63K | ||
| Hurricane | 16.0 | $3K | ||
| Landslide | 39.0 | $490 |
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 high and community resilience is very low in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Dallas County. 2020s bar runs to November 2026.
By type
Most recent
Show all 23
Missouri also had 5 statewide declarations that did not name single counties.
Storm history since 1959
Tornado risk by county ›The National Weather Service has logged 506 storm reports in Dallas County since 1959, with 8 deaths and 44 injuries and about $13.6 million in reported damage. The strongest on record here was an F3 tornado on May 4, 2003 near Louisburg.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| May 4, 2003 | F3 | Louisburg | 10 / 2 |
| May 8, 2009 | EF2 | March | 2 / 1 |
| Feb 28, 2012 | EF2 | Foose | 12 / 1 |
| Mar 31, 2008 | EF2 | Foose | 3 / 0 |
| May 5, 1996 | F1 | Conway | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| May 4, 2003 | Tornado | Louisburg | $4M |
| May 8, 2009 | Thunderstorm Wind | Redtop | $3M |
| May 8, 2009 | Tornado | March | $2M |
| Mar 31, 2008 | Tornado | Foose | $1M |
| Feb 28, 2012 | Tornado | Foose | $650K |
| Dec 26, 2015 | Flash Flood | Earnestville | $500K |
Source: NOAA Storm Events Database, county-based reports through Jul 4, 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 Dallas County
Check your address flood zone ›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 Dallas County
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; 7,613 housing units.
Compare in Missouri
All 115 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| St. Louis County | Heat wave | |
| Jackson County | Inland flooding | |
| St. Charles County | Inland flooding | |
| St. Louis City | Heat wave | |
| Greene County | Inland flooding | |
| Clay County | Inland flooding | |
| Jefferson County | Inland flooding | |
| Boone County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Greene County | 25 | |
| Camden County | 26 | |
| Webster County | 31 | |
| Laclede County | 21 | |
| Polk County | 23 | |
| Hickory County | 21 |
Common questions about Dallas County
What is the biggest natural hazard in Dallas County?
Inland flooding has the highest expected yearly losses in Dallas County, about $3.6 million a year in FEMA's estimate. Ice storm is second at $2 million.
How many federal disasters has Dallas County had?
Dallas County has been included in 23 federal disaster or emergency declarations for natural events since 1973, including 17 major disasters. The most recent was Severe Storms, Tornadoes, Straight-Line Winds, and Flooding in July 2020.
Is Dallas County a high-risk place to live?
Its overall rating is Very Low, 71st highest of 115 in Missouri. 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 Dallas County?
Standard home insurance does not cover flooding. About 1 in 1000 homes in Dallas 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 Dallas County had?
NOAA records list 19 tornadoes in Dallas County since 1950. The strongest was an F3 tornado on May 4, 2003 near Louisburg. The weather service has also logged 151 hail reports and 154 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.