Sanborn County Disaster Risk
Sanborn County, South Dakota
FEMA Risk Rating
Very Low
National Percentile
4th
of 3,144 counties
State Rank
#62
of 66 (1 = highest risk)
Flood Risk
6th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Very Low
Higher than 6% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 67% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 27% of US counties
Earthquake
Seismic activity and ground shaking risk
Very Low
Higher than 12% of US counties
Risk Overview
About Natural Disaster Risk in Sanborn County, South Dakota
Sanborn ranks among nation's safest
Sanborn County scores just 3.56 on the composite risk scale, placing it among the lowest-risk counties in the entire United States. The county's very low rating sits well below South Dakota's county average of 26.84, reflecting exceptional natural disaster safety across all hazard categories.
Among South Dakota's safest counties
Sanborn County ranks in the bottom tier of South Dakota's 66 counties for disaster exposure, with one of the state's lowest composite risk scores. The county's position reflects favorable geographic and geologic characteristics that minimize exposure to natural hazards.
Safest county in its region
Sanborn County's risk score of 3.56 ranks among the lowest in South Dakota, providing residents with substantially safer conditions than most surrounding counties. The central location insulates the county from extreme wildfire, flood, and earthquake concentrations found in western regions.
Wildfire presents only modest concern
Wildfire risk of 66.98 represents Sanborn County's highest hazard score, yet it remains moderate compared to western South Dakota counties. Tornado risk of 26.84 is minimal, while flood and earthquake risks fall below 7, reflecting overall exceptional safety.
Standard insurance provides full protection
Sanborn County residents can rely on basic homeowners insurance to adequately cover their exceptional risk profile, with wildfire coverage as an optional minor addition. Annual policy reviews remain prudent, but the county's low hazard exposure means significant disaster preparation investments are not warranted.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Sanborn County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Sanborn County
Risk Verdict
At the 4th percentile nationally, Sanborn County experiences relatively limited natural hazard pressure compared to most of the country. The 4th percentile national ranking is one lens; Sanborn County residents also benefit from reviewing which specific hazard types drive the county's composite score and preparing accordingly.
Hazard Breakdown
Wildfire risk is Sanborn County's dominant natural hazard, ranked at the 67th percentile nationally under FEMA's National Risk Index. Tornado ranks second at the 27th percentile nationally. Additional tracked hazards include earthquake (12th percentile), flood (6th percentile).
Preparedness Context
Sanborn County's dominant hazard is wildfire, ranked at the 67th percentile nationally. Maintaining at least 30 feet of lean, clean vegetation around structures in Sanborn County and keeping gutters clear of debris significantly reduces ignition risk from wind-driven embers. The county's tornado exposure at the 27th percentile nationally complements the wildfire risk — saturating rain after burn scarring often triggers secondary flood and debris flow events. Sanborn County's households benefit from reviewing homeowners insurance before fire season, specifically whether the policy covers replacement cost rather than actual cash value, and whether it includes additional living expenses if displacement is required.
Regional Context
A composite score 23.3 points below the South Dakota state average puts Sanborn County in a better-than-typical position relative to neighboring counties.
Is your household prepared for Sanborn County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Sanborn County, SD?
What types of natural hazards affect Sanborn County?
How does Sanborn County risk compare to the South Dakota average?
Is Sanborn County at risk for wildfire?
How is natural disaster risk measured?
Is Sanborn County a safe place to live?
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.