Mills County, Iowa: hazard risk
FEMA rates Mills County's overall risk Very Low (score 18.5 of 100, higher than 18% of rated U.S. counties). Its storm record holds 516 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Drought | Relatively Moderate | 65.3 | $614K |
| Landslide | Relatively Low | 78.4 | $20K |
| Hail | Relatively Low | 72.7 | $973K |
| Tornado | Relatively Low | 55.9 | $2.3M |
| Ice Storm | Relatively Low | 40.6 | $83K |
| Heat Wave | Relatively Low | 40.0 | $356K |
| Strong Wind | Relatively Low | 34.7 | $535K |
| Winter Weather | Relatively Low | 33.6 | $54K |
| Cold Wave | Relatively Low | 28.6 | $592K |
| Wildfire | Very Low | 52.4 | $83K |
| Riverine Flooding | Very Low | 27.4 | $4.9M |
| Lightning | Very Low | 13.7 | $73K |
| Earthquake | Very Low | 8.9 | $13K |
| Hurricane | No Rating | 0.0 | $0 |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Hail | 148 | 0 | $518K | 6th of 99 | 337th of 3,080 |
| Severe thunderstorm wind | 146 | 0 | $41K | 22nd of 99 | 1269th of 3,080 |
| Winter storms | 66 | 1 | $2.1M | 65th of 99 | 1037th of 3,077 |
| Extreme cold | 34 | 0 | – | 9th of 99 | 244th of 3,076 |
| Floods | 32 | 0 | $18M | 70th of 99 | 1139th of 3,080 |
| Heat | 26 | 0 | – | 5th of 99 | 456th of 3,076 |
| Tornadoes | 25 | 0 | $1.5M | 53rd of 99 | 780th of 3,080 |
| High wind and dust storms | 23 | 0 | – | 47th of 99 | 836th of 3,080 |
| Drought | 10 | 0 | – | 86th of 99 | 1551st of 3,063 |
| Heavy rain | 3 | 0 | – | 77th of 99 | 1139th of 3,080 |
| Lightning | 1 | 0 | $344K | 73rd of 99 | 1822nd of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Mills County record: every hazard by year and month, the deadliest events and FEMA's declarations.