riskbycounty
FEMA National Risk Index

Adams County Disaster Risk

Adams County, Illinois

FEMA Risk Rating

Relatively Low

National Percentile

64th

of 3,144 counties

State Rank

#41

of 102 (1 = highest risk)

Flood Risk

61th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 61% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 5% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 59% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 65% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 24% of US counties

Risk Advisory: Adams County

Risk Verdict

Adams County shows a relatively low overall disaster risk profile, scoring in the 64th percentile nationally. The county faces moderate hazard exposure relative to other U.S. counties. Standard emergency preparedness is recommended, with attention to the specific hazards that dominate locally.

Hazard Breakdown

Earthquake risk is the dominant hazard for Adams County, scoring in the 65th percentile nationally. It is followed by flood risk at the 61th percentile. Additional hazards include tornado (59th), hurricane (24th), wildfire (5th).

Preparedness Context

With earthquake risk as the top concern, Adams County residents should secure heavy furniture and appliances, know how to shut off utilities, and keep emergency supplies accessible. Secondary risks such as flood also warrant attention in household and community preparedness planning. FEMA recommends all households maintain at least 72 hours of food, water, and medication supplies regardless of specific hazard exposure.

Regional Context

Adams County is significantly riskier than the average county in Illinois. Its composite risk score is 9.7 points higher than the state average, meaning residents face above-average exposure to natural hazards compared to their neighbors.

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Frequently Asked Questions

What is the natural disaster risk in Adams County, IL?
Adams County has a FEMA National Risk Index rating of Relatively Low, placing it in the 64th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Adams County?
Adams County is evaluated for five major natural hazard types: earthquake (65th percentile), flooding (61th percentile), tornado (59th percentile), hurricane (24th percentile), wildfire (5th percentile). The highest-risk hazard is earthquake at the 65th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Adams County risk compare to the Illinois average?
Adams County's composite risk percentile is 64th, compared to the Illinois state average of 55th percentile. The state's overall risk rating is Relatively Low. This means Adams County faces higher natural disaster risk than the typical county in Illinois.
Is Adams County at risk for earthquake?
Yes, Adams County's earthquake risk is at the 65th percentile nationally. This is above the national median. For flooding specifically, Adams County is at the 61th percentile.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Why is Adams County higher risk than average?
Adams County's composite risk score of 64th percentile is above the Illinois state average of 55th percentile. This elevated risk is driven by earthquake exposure (65th percentile), along with flooding and tornado risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.

Counties with Similar Risk

Montgomery County

Illinois

+1.2

Relatively Low

65th percentile

Clinton County

Illinois

+1.4

Relatively Low

66th percentile

Whiteside County

Illinois

+1.6

Relatively Low

66th percentile

By Logan Johnson, Founder & Data EditorUpdated Reviewed by Logan Johnson, Founder & Data Editor

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.

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