Macon County
Illinois — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 83th
Macon County faces medium composite natural disaster risk (NRI Risk Index score 83.3, 83th national percentile), driven primarily by cold wave and heat wave exposure. Expected annual loss across all 18 hazard types is $47M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Cold Wave | High | 3.21 / yr | $8M |
| Heat Wave | Medium | 7.32 / yr | $3M |
| Earthquake | Low | 0.00 / yr | $5M |
| Strong Wind | High | 5.04 / yr | $2M |
| Drought | Medium | 2.14 / yr | $1M |
| Tornado | Medium | 0.65 / yr | $5M |
| Hail | Medium | 3.16 / yr | $1M |
| Riverine Flood | Medium | 1.36 / yr | $21M |
| Winter Weather | Medium | 8.58 / yr | $177K |
| Lightning | Medium | 47.63 / yr | $574K |
| Ice Storm | Medium | 1.44 / yr | $167K |
| Landslide | Very Low | 0.12 / yr | $1K |
| Hurricane | Very Low | 0.01 / yr | $23K |
| Wildfire | Very Low | 0.00 / yr | $8K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Macon County?
Macon County has a composite FEMA National Risk Index score of 83.3 out of 100, placing it in the Medium category and the 83th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Macon County?
The three highest-rated hazards are Cold Wave (High, $8M EAL), Heat Wave (Medium, $3M EAL), Earthquake (Low, $5M EAL). These account for most of the county's expected annual losses.
How does Macon County compare to other Illinois counties?
Macon County ranks #20 of 102 Illinois counties for overall natural disaster risk, with a medium rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Macon County's $47M EAL is a statistical average, not a guarantee for any specific year or address.