Brazoria County Disaster Risk
Brazoria County, Texas
FEMA Risk Rating
Relatively Moderate
National Percentile
94th
of 3,144 counties
State Rank
#17
of 254 (1 = highest risk)
Flood Risk
94th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively High
Higher than 94% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Moderate
Higher than 86% of US counties
Tornado
Tornado and severe thunderstorm risk
Relatively High
Higher than 97% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively Low
Higher than 46% of US counties
Hurricane
Tropical cyclone and hurricane risk
Relatively High
Higher than 97% of US counties
Risk Overview
About Natural Disaster Risk in Brazoria County, Texas
Brazoria faces nearly double national risk
Brazoria County's composite risk score of 93.64 earns a Relatively Moderate rating and nearly doubles the national average. This Gulf Coast county ranks among America's highest-exposure areas to natural disasters.
Among Texas's riskiest counties statewide
Brazoria's 93.64 score towers 91% above Texas's state average of 49.00, placing it in the state's most hazardous tier. Few Texas counties face comparable multi-hazard intensity.
Highest risk in its coastal region
Brazoria (93.64) substantially exceeds nearby Brazos County (88.36) and Brooks County (60.81) in overall disaster exposure. Its Gulf proximity and low elevation create a uniquely hazardous setting.
Hurricanes, floods, and tornadoes converge
Hurricane risk of 96.91 and flood risk of 94.40 make Brazoria one of America's most hurricane-vulnerable counties, while tornado risk of 97.04 adds major severe-weather exposure. This trifecta of coastal and severe-storm hazards demands serious preparedness.
Flood and hurricane insurance are non-negotiable
Brazoria County residents must carry flood insurance through the National Flood Insurance Program and robust windstorm coverage—standard homeowners policies exclude both. Elevated construction, impact-resistant windows, and a reinforced shelter are essential investments in this highest-risk environment.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Brazoria County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Brazoria County
Risk Verdict
Brazoria County registers a moderately elevated natural disaster risk, ranking at the 94th percentile across all U.S. counties. High composite risk signals that multiple hazard types are elevated simultaneously; planning for more than one scenario is important in Brazoria County.
Hazard Breakdown
Tornado risk is Brazoria County's dominant natural hazard, ranked at the 97th percentile nationally under FEMA's National Risk Index. Hurricane ranks second at the 97th percentile nationally. Additional tracked hazards include flood (94th percentile), wildfire (86th percentile), earthquake (46th percentile).
Preparedness Context
Brazoria County's primary hazard, tornado, ranks at the 97th percentile nationally. In Brazoria County, mobile homes and manufactured housing face significantly higher tornado risk than site-built structures; residents in these homes should identify the nearest permanent community shelter in advance. The secondary hurricane hazard at the 97th percentile nationally adds seasonal complexity to Brazoria County's preparedness calendar, since hurricane and tornado risk often peak at different points in the year. The highest-risk window for tornado fatalities is overnight, when Brazoria County residents may be asleep. A NOAA weather radio with overnight alert capability is the single most impactful low-cost preparedness step available to Brazoria County households.
Regional Context
Brazoria County falls 44.6 points above Texas's typical county risk level, which means the hazard environment here is notably more demanding than the state baseline.
Is your household prepared for Brazoria County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Brazoria County, TX?
What types of natural hazards affect Brazoria County?
How does Brazoria County risk compare to the Texas average?
Is Brazoria County at risk for tornado?
How is natural disaster risk measured?
Why is Brazoria County higher risk than average?
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.