Data Viewer
Live dataCounty-level health risk, built from 42 data layers.
Start on the headline Health Index, use the Component dropdown to inspect any single layer, search a city or ZIP to jump straight to it, then click a county to see every layer at once — each a 0–100 national percentile (higher = worse).
Browse the full map free. Download the data or query it via REST + MCP.
- data layers
- 42
- data layers
- US counties
- 3,143
- US counties
- every layer
- REST + MCP
- every layer
The 42 data layers
Every layer is a 0–100 national percentile across all 3,143 US counties — higher = worse (except the two neutral demographic layers, noted below). Pick any layer from the Component dropdown, or click a county to see them all at once.
Overall health & mortality
- GeoHealth IndexCDC PLACES · 40 measures
- Composite of 40 adult-health measures (chronic disease, behavioral risk, prevention) — the headline layer.
- MortalityCHR + NCI
- Composite of premature death (YPLL-75), all-cause age-adjusted, cancer mortality, suicide, and overdose.
Cancer incidence
Age-adjusted incidence per 100k (USCS / State Cancer Profiles). Kansas, Louisiana & Alaska don't release county-level cancer data — those show state-level values; other privacy-suppressed counties render gray.
- Cancer — All SitesSEER + NPCR
- All-sites cancer incidence, 2019–2023.
- Lung CancerUSCS · 2018–2022
- Lung & bronchus incidence.
- Breast CancerUSCS · female
- Female breast cancer incidence.
- Colorectal CancerUSCS
- Colorectal cancer incidence.
- Prostate CancerUSCS · male
- Prostate cancer incidence.
Chronic disease
Adult age-adjusted prevalence, CDC PLACES.
- Diabetes
- Diagnosed diabetes prevalence.
- Heart DiseaseCHD
- Coronary heart disease prevalence.
- High Blood Pressure
- Adult high-blood-pressure prevalence.
- Stroke
- Adult stroke prevalence.
- High Cholesterol
- Adult high-cholesterol prevalence.
- Asthma
- Adult current-asthma prevalence.
- COPD
- Chronic obstructive pulmonary disease prevalence.
- Arthritis
- Adult arthritis prevalence.
- Obesity
- Adult obesity prevalence (BMI ≥ 30).
- Cancer Prevalence
- Adults living with cancer (excl. skin) — distinct from the SEER incidence layers above.
Mental & cognitive health
Adult age-adjusted prevalence, CDC PLACES.
- Depression
- Adult depression prevalence.
- Frequent Mental Distress
- Adults with ≥14 poor mental-health days/month.
- Frequent Physical Distress
- Adults with ≥14 poor physical-health days/month.
- Cognitive Disability
- Adult cognitive-disability prevalence.
Behavioral risk
Adult age-adjusted prevalence, CDC PLACES.
- Smoking
- Adult current-smoking prevalence.
- Physical Inactivity
- No leisure-time physical activity.
- Binge Drinking
- Adult binge-drinking prevalence.
- Short Sleep
- Adults sleeping <7 hours.
Healthcare access
Adult age-adjusted, CDC PLACES.
- Uninsuredages 18–64
- Adults without health insurance.
- No Routine Checkup
- Adults with no routine checkup in the past year.
Environment
- Drinking-Water ContaminationEPA SDWA
- Safe Drinking Water Act health-based violations, trailing 5 years, pop-weighted per water system.
- Air QualityEPA AQS
- Composite of median AQI, % unhealthy days & p90 AQI. Monitor-based (~996 counties); the rest render gray.
- PM2.5EPA AQS
- Annual mean fine-particulate concentration. ~629 monitored counties; the rest gray (no monitor, not "clean").
- OzoneEPA AQS
- Annual 8-hour ozone concentration. ~762 monitored counties; the rest gray.
Climate & natural hazard
FEMA National Risk Index hazard scores.
- Natural Hazard Riskcomposite
- Expected annual loss across 18 natural hazards.
- Tornado Risk
- Tornado hazard score.
- Hurricane Risk
- Hurricane hazard score (inland counties render low).
- Inland Flood Risk
- Riverine flooding hazard score.
- Wildfire Risk
- Wildfire hazard score.
- Heat Wave Risk
- Heat-wave hazard score.
Socioeconomic & demographic
- Social Determinants (SDOH)AHRQ
- Composite of income, education, housing burden, food access, insurance & commute.
- Median IncomeCensus ACS · inverted
- Median household income, inverted so higher percentile = lower income = greater disadvantage.
- Median AgeCensus ACS · neutral
- Median resident age. Neutral — higher percentile = older, not "worse."
- Population GrowthCensus PEP · neutral
- Population change 2020→2025. Neutral — higher = faster growth; lowest = shrinking.
- Gas PriceEIA · state-fill
- Regular gasoline retail price. No county data exists, so each county shows its state or PADD-region price — coarse by design.
Every layer is an agent-callable intelligence product via REST + MCP. Browse the catalog →
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Fetching 3,143 counties + US topology…
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County leaderboards · GeoHealth Index
National percentile — 0 = lowest risk, 100 = highest · — counties with data.
Lowest risk · top 15
Highest risk · top 15
Rural-vs-urban quadrants · GeoHealth Index
Every county plotted by population (rural → urban, log scale) against its risk score. The outliers are the story: high-risk urban cores (top-right) and low-risk rural pockets (bottom-left).
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