riskbycounty
FEMA NRI v1.20Released December 2025Methodology

Dallas County Disaster Risk

Dallas County, Texas

FEMA Risk Rating

Very High

NRI score (0–100 relative scale)

99.7

FEMA composite county value

State Rank

#2

of 254, sorted high to low by RiskByCounty

Flood NRI score

99.6

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.

Tornado

99.8 / 100

Flood

99.6 / 100

Higher of FEMA Coastal Flooding (Not available) and Inland Flooding (99.6) NRI scores.

Earthquake

91.3 / 100

Wildfire

80.3 / 100

Hurricane

73.6 / 100

FEMA NRI data summary

Selected hazard scores for Dallas County

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

Tornado
99.8
Flood
99.6
Earthquake
91.3
Wildfire
80.3
Hurricane
73.6

Higher of FEMA Coastal Flooding and Inland Flooding NRI scores

Displayed flood score
99.6
Coastal Flooding
Not available
Inland Flooding
99.6

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

Continue to Ready.gov for federal emergency-planning information maintained outside RiskByCounty.

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Frequently Asked Questions

How many Texas county records are included?
RiskByCounty includes 254 Texas county records from FEMA NRI v1.20 (December 2025).
Which FEMA county ratings appear in Texas?
FEMA NRI v1.20 (December 2025) county rating counts for Texas: Very Low: 113; Relatively Low: 92; Relatively Moderate: 33; Relatively High: 14; Very High: 2; Not available: 0.
How complete are the five selected hazard fields for Texas?
FEMA NRI v1.20 (December 2025) availability among 254 county records: Flood: 254 of 254; Wildfire: 254 of 254; Tornado: 254 of 254; Earthquake: 254 of 254; Hurricane: 250 of 254. RiskByCounty displays five selected hazard categories out of FEMA's 18.
What FEMA NRI information is available for Dallas County, TX?
Dallas County has an official FEMA NRI v1.20 composite rating of Very High and an NRI score (0–100 relative scale) of 99.7. RiskByCounty ranks it 2nd of 254 Texas county records when sorting the FEMA composite NRI scores from high to low.
Which selected hazard scores are shown for Dallas County?
RiskByCounty displays five selected hazard categories out of FEMA's 18 using FEMA NRI v1.20 (December 2025). For Dallas County, Tornado: 99.8; Flood: 99.6; Earthquake: 91.3; Wildfire: 80.3; Hurricane: 73.6.
How is flood displayed for Dallas County?
RiskByCounty's flood display is the higher of FEMA Coastal Flooding and Inland Flooding NRI scores. For Dallas County, Coastal Flooding is Not available, Inland Flooding is 99.6, and the displayed flood score is 99.6.

Counties with Similar Risk

Bexar County

Texas

-0.2

Relatively High

NRI score 99.4

Harris County

Texas

+0.3

Very High

NRI score 99.9

Tarrant County

Texas

-0.5

Relatively High

NRI score 99.1

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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