Community climate vulnerability, made visible.
County-level scores from the U.S. Climate Vulnerability Index (CVI), paired with Populations at Risk data so the numbers mean something on the ground.
Climate Vulnerability Map
Counties shaded by how they rank among all 3,143 U.S. counties on the selected score — darker means more vulnerable. Click a county for its report.
Highest & Lowest
Click a name to open its report.
Score Distribution
The highlighted bar contains the selected county.
Census Tract Report
County Report
Click a county on the map or use the search box.
Data Sources
What is the Climate Vulnerability Index?
The U.S. Climate Vulnerability Index (CVI) pulls together 184 measures of community health, income, housing, infrastructure, environment, and climate-related risks into one picture of how vulnerable each county is compared with every other county in the country. Scores run from 0 to 1 — a higher score means more of the conditions that make climate impacts harder to prepare for, withstand, and recover from.
One number can't say why a county is vulnerable, so each county report breaks the score into its categories and lists the specific measures pushing it up. The CVI was developed by researchers at Texas A&M University and the Environmental Defense Fund (Lewis et al., 2023); the full neighborhood-level tool is at climatevulnerabilityindex.org.
What is ALICE?
ALICE stands for Asset Limited, Income Constrained, Employed — households that earn more than the Federal Poverty Level, but less than what it actually costs to get by where they live. United For ALICE (a United Way research program) prices a bare-bones "survival budget" for each county — housing, child care, food, transportation, health care, and a basic phone plan — and counts the households below that line.
Adding ALICE households to households in poverty gives a fuller picture of financial hardship than the poverty rate alone: many working families earn too much to qualify as "poor" but too little to afford the basics.
What is the Populations at Risk data?
The Populations at Risk table describes who actually lives in a county: the share of residents who are older or very young, living with a disability, earning low incomes, without health insurance, without a vehicle or home internet, and so on. These are real percentages from the Census Bureau's American Community Survey (compiled in the CDC/ATSDR Social Vulnerability Index, 2018–2022), shown next to the state and national figures so it's easy to spot where a county stands out.
The change column shows how each share has moved over roughly the past decade (compared with the 2010–2014 survey window). Life expectancy and food insecurity come from the CVI's own source data.