riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Knox County Disaster Risk

Knox County, Maine

FEMA Risk Rating

Very Low

National Percentile

29th

of 3,144 counties

State Rank

#15

of 16 (1 = highest risk)

Flood Risk

69th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 69% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 17% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 13% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 46% of US counties

Hurricane

Tropical cyclone and hurricane risk

Moderate

Higher than 83% of US counties

Risk Overview

About Natural Disaster Risk in Knox County, Maine

Knox County is Maine's safest

Knox County's composite risk score of 28.59 ranks among the lowest in the nation, reflecting minimal exposure to tornado, earthquake, and wildfire threats. Despite coastal location, the county's hurricane risk (82.90) is offset by exceptional performance on other hazard types.

Very low risk statewide

At 28.59, Knox ranks as Maine's second-safest county after Lincoln (31.81), nearly 50% below the state average of 56.75. This exceptional safety profile makes Knox one of New England's lowest-risk counties overall.

Safest county on the coast

Knox's 28.59 score is dramatically lower than coastal peers like Cumberland (77.00) and Hancock (55.03), making it a coastal safety anomaly. The county's island and peninsular geography creates unique protection against many hazard types.

Hurricane is the only significant threat

Hurricane risk (82.90) stands as Knox's sole major concern, while flood (69.20), earthquake (45.93), tornado (12.82), and wildfire (16.79) all score well below state averages. This unusual profile—high hurricane, low everything else—defines Knox's risk landscape.

Windstorm coverage is your main focus

Knox's 82.90 hurricane risk demands solid windstorm and hurricane coverage in your homeowners policy. You can confidently minimize or skip earthquake, wildfire, and tornado riders—your county's exceptional safety on these hazards means those premiums are unnecessary expenses.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Knox County

Top Hazards by Exposure

  1. #1
    HurricanePrepare
    83th percentile
  2. #2
    FloodPrepare
    69th percentile
  3. #3
    EarthquakePrepare
    46th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Risk Advisory: Knox County

Risk Verdict

Compared to the nation's 3,144 counties, Knox County ranks at the 29th percentile for natural disaster risk — toward the safer end of the spectrum. Even at the 29th percentile, Knox County's composite score reflects real hazard exposure categories — knowing which ones apply locally enables targeted, efficient household preparedness.

Hazard Breakdown

Hurricane risk is Knox County's dominant natural hazard, ranked at the 83th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 69th percentile nationally. Additional tracked hazards include earthquake (46th percentile), wildfire (17th percentile), tornado (13th percentile).

Preparedness Context

With hurricane ranked at the 83th percentile nationally, Knox County sits in a zone where multi-day supply readiness matters: grid outages after landfalling storms can last one to three weeks in heavily affected areas. Flood, the county's second-ranked hazard at the 69th percentile nationally, represents an additional preparedness consideration for Knox County independent of hurricane season. Insurance gaps are the most common post-hurricane financial shock: standard homeowners policies typically exclude flood damage and may have a separate wind deductible. Knox County households benefit from a pre-season insurance review confirming both wind and flood coverage.

Regional Context

At 28.2 points below the Maine state average, Knox County is among the lower-risk counties in the state for natural disaster exposure.

Is your household prepared for Knox County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Knox County, ME?
Knox County has a FEMA National Risk Index rating of Very Low, placing it in the 29th 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 Knox County?
Knox County is evaluated for five major natural hazard types: hurricane (83th percentile), flooding (69th percentile), earthquake (46th percentile), wildfire (17th percentile), tornado (13th percentile). The highest-risk hazard is hurricane at the 83th 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 Knox County risk compare to the Maine average?
Knox County's composite risk percentile is 29th, compared to the Maine state average of 57th percentile. The state's overall risk rating is Relatively Low. This means Knox County faces lower natural disaster risk than the typical county in Maine.
Is Knox County at risk for hurricane?
Yes, Knox County's hurricane risk is at the 83th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Knox County is at the 69th 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.
Is Knox County a safe place to live?
Knox County's composite risk score of 29th percentile is below the Maine state average of 57th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is hurricane at the 83th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.
By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, 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.