riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Osage County Disaster Risk

Osage County, Missouri

FEMA Risk Rating

Very Low

NRI score (0–100 relative scale)

32.9

FEMA composite county value

State Rank

#78

of 115, sorted high to low by RiskByCounty

Flood NRI score

47.5

higher coastal/inland value

Hazard Risk Breakdown

Five selected hazard categories out of FEMA's 18. Values are FEMA NRI v1.20 scores on a 0–100 relative scale.

Earthquake

55.9 / 100

Tornado

53.6 / 100

Flood

47.5 / 100

Higher of FEMA Coastal Flooding (Not available) and Inland Flooding (47.5) NRI scores.

Wildfire

35.8 / 100

Hurricane

14.1 / 100

FEMA NRI data summary

Selected hazard scores for Osage County

Among the five hazard categories displayed by RiskByCounty, earthquake has the highest NRI score for this county.

Earthquake
55.9
Tornado
53.6
Flood
47.5
Wildfire
35.8
Hurricane
14.1

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
47.5
Coastal Flooding
Not available
Inland Flooding
47.5

These five categories are a selected subset of FEMA's 18 natural hazards. FEMA's composite score and official rating are separate fields in the National Risk Index dataset.

FEMA National Risk Index documentation

Official Ready.gov resource

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Frequently Asked Questions

How many Missouri county records are included?
RiskByCounty includes 115 Missouri county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in Missouri?
FEMA NRI v1.20 (December 2025) county rating counts for Missouri: Very Low: 45; Relatively Low: 56; Relatively Moderate: 11; Relatively High: 3; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for Missouri?
FEMA NRI v1.20 (December 2025) availability among 115 county records: Flood: 115 of 115; Wildfire: 115 of 115; Tornado: 115 of 115; Earthquake: 115 of 115; Hurricane: 115 of 115. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Osage County, MO?
Osage County has an official FEMA NRI v1.20 composite rating of Very Low and an NRI score (0–100 relative scale) of 32.9. RiskByCounty ranks it 78th of 115 Missouri county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Osage County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Osage County, Earthquake: 55.9; Tornado: 53.6; Flood: 47.5; Wildfire: 35.8; Hurricane: 14.1.
How is flood displayed for Osage County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Osage County, Coastal Flooding is Not available, Inland Flooding is 47.5, and the displayed flood score is 47.5.

Counties with Similar Risk

Scotland County

Missouri

+0.0

Very Low

NRI score 33.0

Carroll County

Missouri

-0.3

Very Low

NRI score 32.6

Gasconade County

Missouri

-1.0

Very Low

NRI score 32.0

Published by RiskByCounty

County summaries are deterministic transformations of frozen FEMA county fields. No external subject-matter reviewer is credited.

Published · Updated

Data Source

County data sourced from FEMA National Risk Index v1.20, released December 2025. Values are labeled NRI score (0–100 relative scale). RiskByCounty displays five selected hazard categories out of FEMA's 18; flood is the higher of the Coastal Flooding and Inland Flooding source scores.

RiskByCounty presents county-level source fields and deterministic arithmetic summaries.

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