About RiskByCounty

RiskByCounty provides natural disaster risk data for every county in the United States. Our goal is to make FEMA's National Risk Index data accessible and easy to understand for homeowners, renters, and anyone researching where to live.

We cover five major hazard categories: flood, wildfire, tornado, earthquake, and hurricane. Risk scores (0–100) are relative rankings — they compare each county to all others nationwide.

Risk data is sourced from the FEMA National Risk Index, a nationally consistent dataset released annually by the Federal Emergency Management Agency.

RiskByCounty is part of the ByCounty Network, a collection of county-data sites powered by free government APIs.