riskbycounty
FEMA National Risk Index

Johnston County Disaster Risk

Johnston County, Oklahoma

FEMA Risk Rating

Very Low

National Percentile

25th

of 3,144 counties

State Rank

#68

of 77 (1 = highest risk)

Flood Risk

19th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 19% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Moderate

Higher than 82% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 59% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 35% of US counties

Hurricane

Tropical cyclone and hurricane risk

Very Low

Higher than 31% of US counties

Risk Advisory: Johnston County

Risk Verdict

Johnston County has a very low overall disaster risk profile, scoring in the 25th percentile nationally. This county is among the safer counties in the United States from a natural disaster perspective, though no area is entirely risk-free.

Hazard Breakdown

Wildfire risk is the dominant hazard for Johnston County, scoring in the 82th percentile nationally. It is followed by tornado risk at the 59th percentile. Additional hazards include earthquake (35th), hurricane (31th), flood (19th).

Preparedness Context

With wildfire risk as the top concern, Johnston County residents should create defensible space around your property, sign up for local emergency alerts, and prepare a go-bag with essential documents and medications. Secondary risks such as tornado 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

Johnston County is notably safer than the average county in Oklahoma. Its composite risk score is 30.1 points lower than the state average, indicating below-average exposure to natural hazards relative to other counties in the state.

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Frequently Asked Questions

What is the natural disaster risk in Johnston County, OK?
Johnston County has a FEMA National Risk Index rating of Very Low, placing it in the 25th 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 Johnston County?
Johnston County is evaluated for five major natural hazard types: wildfire (82th percentile), tornado (59th percentile), earthquake (35th percentile), hurricane (31th percentile), flooding (19th percentile). The highest-risk hazard is wildfire at the 82th 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 Johnston County risk compare to the Oklahoma average?
Johnston County's composite risk percentile is 25th, compared to the Oklahoma state average of 56th percentile. The state's overall risk rating is Relatively Low. This means Johnston County faces lower natural disaster risk than the typical county in Oklahoma.
Is Johnston County at risk for wildfire?
Yes, Johnston County's wildfire risk is at the 82th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Johnston County is at the 19th 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 Johnston County a safe place to live?
Johnston County's composite risk score of 25th percentile is below the Oklahoma state average of 56th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is wildfire at the 82th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.

Counties with Similar Risk

Ellis County

Oklahoma

-0.6

Very Low

25th percentile

Roger Mills County

Oklahoma

-2.2

Very Low

23th percentile

Grant County

Oklahoma

+2.4

Very Low

28th 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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