riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Polk County Disaster Risk

Polk County, Tennessee

FEMA Risk Rating

Very Low

NRI score (0–100 relative scale)

31.2

FEMA composite county value

State Rank

#72

of 95, sorted high to low by RiskByCounty

Flood NRI score

42.6

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.

Wildfire

75.6 / 100

Earthquake

70.8 / 100

Tornado

50.7 / 100

Hurricane

46.0 / 100

Flood

42.6 / 100

Higher of FEMA Coastal Flooding (Not available) and Inland Flooding (42.6) NRI scores.

FEMA NRI data summary

Selected hazard scores for Polk County

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

Wildfire
75.6
Earthquake
70.8
Tornado
50.7
Hurricane
46.0
Flood
42.6

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
42.6
Coastal Flooding
Not available
Inland Flooding
42.6

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 Tennessee county records are included?
RiskByCounty includes 95 Tennessee county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in Tennessee?
FEMA NRI v1.20 (December 2025) county rating counts for Tennessee: Very Low: 31; Relatively Low: 50; Relatively Moderate: 12; Relatively High: 2; Very High: 0; Not available: 0.
How complete are the five selected hazard fields for Tennessee?
FEMA NRI v1.20 (December 2025) availability among 95 county records: Flood: 95 of 95; Wildfire: 95 of 95; Tornado: 95 of 95; Earthquake: 95 of 95; Hurricane: 95 of 95. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Polk County, TN?
Polk County has an official FEMA NRI v1.20 composite rating of Very Low and an NRI score (0–100 relative scale) of 31.2. RiskByCounty ranks it 72nd of 95 Tennessee county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Polk County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Polk County, Wildfire: 75.6; Earthquake: 70.8; Tornado: 50.7; Hurricane: 46.0; Flood: 42.6.
How is flood displayed for Polk County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Polk County, Coastal Flooding is Not available, Inland Flooding is 42.6, and the displayed flood score is 42.6.

Counties with Similar Risk

Stewart County

Tennessee

-1.8

Very Low

NRI score 29.4

Perry County

Tennessee

+2.2

Very Low

NRI score 33.4

Fentress County

Tennessee

-2.7

Very Low

NRI score 28.4

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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