Every one of the 83,388 U.S. census tracts is scored for predicted childhood lead-exposure risk from public housing-age and poverty data, and validated against measured blood lead in eleven states. Zoom out to see the country, or zoom in to your own neighborhood. Darker green is higher predicted risk.
This is a screening surface, not a diagnosis. It ranks where lead exposure is most likely from two things published for every neighborhood in the country: the age of the housing stock and the rate of poverty. Older homes are far more likely to hold lead paint, and lower-income housing is less likely to have had it removed. The ranking agrees with measured childhood blood lead at a moderate level wherever measured data exists to check it, including in states that publish none of their own.
A dark tract does not mean your specific home has a hazard, and a light tract does not mean it is safe. The map narrows where to look first. A home test of paint, dust, or water, and a child's blood-lead test, are what confirm a hazard.
See where the federal money goes → Test your home →
