
Author
Logan Johnson
Founder & Data Editor
Builder and data editor of the ByCounty Network. I publish county-level data sourced exclusively from federal agencies — and I am personally accountable for every methodology decision on this site.
Logan Johnson is the founder and data editor of the ByCounty Network — a family of independent data-journalism sites that publish county-level statistics from primary U.S. government sources: U.S. Census ACS, FBI UCR, CDC, FEMA NRI, NCES, EPA, NOAA, USDA, and USASpending.gov.
His role is the data-editor role, not the subject-matter-expert role. He designs the data pipelines that pull each dataset, sets the methodology behind every composite score and ranking, spot-checks AI-generated narratives against the underlying statistics before publication, and signs off on every methodology change. He is not a CPA, physician, criminologist, real-estate broker, or other domain-credentialed professional. The site is a transparent data utility, not a professional advisory service.
When a feature genuinely requires domain expertise — a public-health analyst weighing in on CDC measure choice, a CPA reviewing a property-tax explainer — Logan recruits a named co-byline reviewer rather than fabricating credentials. The reviewer commitment for each site is documented on that site's editorial-standards page, including the recruit status when no domain reviewer is currently in place.
Outside the network, Logan has spent the last several years building data infrastructure for logistics and operations teams — work that translates directly into the pipeline discipline applied here: every statistic on the site is traceable to a primary source, every methodology decision is documented, and every page lists a "Last reviewed" date.
Coverage areas
- FEMA National Risk Index (NRI v1.19.0)
- natural-hazard composite risk scoring
- expected-annual-loss methodology
- per-hazard county risk data attribution
Articles by Logan on Risk By County
Understanding Natural Disaster Risk by County
A data-driven analysis of natural disaster risk across all 3,100+ US counties using FEMA National Risk Index data. See which counties face the highest and lowest risk from floods, wildfires, tornadoes, earthquakes, and hurricanes.
FEMA's National Risk Index: What It Means for Your County
A complete guide to understanding FEMA's National Risk Index — how risk scores are calculated, what the 18 hazard types mean, and how to use NRI data for insurance, home buying, and emergency preparedness.
How to Prepare for Natural Disasters Based on Your County's Risk Profile
Practical preparedness guide for flood, wildfire, tornado, earthquake, and hurricane risk — customized to your county's FEMA risk scores. Insurance tips, evacuation planning, and emergency kit essentials.
Counties with the Highest Natural Disaster Risk
The 25 US counties with the highest composite natural disaster risk scores from FEMA data. See which counties face the most severe flood, wildfire, tornado, and hurricane exposure.
Safest Counties from Natural Disasters
The 25 safest US counties from natural disasters, with the lowest composite risk scores. Find the counties with minimal flood, wildfire, tornado, earthquake, and hurricane exposure.
Counties with the Worst Flood Risk
The 25 US counties with the highest flood risk scores from FEMA data. See where riverine and coastal flooding pose the greatest threat to homes and infrastructure.
Counties with the Highest Wildfire Risk
The 25 US counties with the highest wildfire risk scores from FEMA data. See where wildfires pose the greatest threat to homes in the wildland-urban interface.
Most Tornado-Prone Counties in America
The 25 US counties with the highest tornado risk scores from FEMA data. See which counties in Tornado Alley and Dixie Alley face the greatest tornado exposure.
Counties with the Highest Hurricane Risk
The 25 US counties with the highest hurricane risk scores from FEMA data. See which coastal counties face the greatest threat from tropical storms and storm surge.
Counties with the Highest Earthquake Risk
The 25 US counties with the highest earthquake risk scores from FEMA data. See which counties along fault lines face the greatest seismic threat.
Counties Facing Multiple High-Risk Natural Hazards
The US counties facing two or more high-risk natural hazards simultaneously. See where flood, wildfire, tornado, earthquake, and hurricane risks overlap.
Natural Disaster Risk by State
State-by-state natural disaster risk rankings based on average county composite scores from FEMA data. See which states are highest and lowest risk overall.