Topic: Demographic data
Central site for access to various tools and data to inform strategies to measure air pollution and reduce health impacts in California communities.
EJScreen (formerly an EPA tool, now discontinued and publicly hosted) is a national mapping and screening tool that combines environmental, health, and demographic data to help identify communities that may be disproportionately impacted by pollution and other environmental hazards. It provides interactive maps and summary reports for “EJ indexes” that blend measures like air pollution, proximity to industrial facilities, traffic, and waste sites with indicators such as income, race/ethnicity, and language isolation. Agencies, communities, and advocates use EJScreen to screen for potential environmental justice concerns, prioritize areas for further study or action, and support planning, permitting, and policy decisions.
The CDC PLACES (Local Data for Better Health) tool is a free, interactive web resource that provides model-based estimates of chronic disease, health behaviors, preventive practices, disabilities, and related social factors for small geographic areas across the United States. It offers consistent data for all counties, most cities and towns (places), census tracts, and ZIP Code Tabulation Areas, allowing users to view, map, and download neighborhood-level health information to identify local health problems, disparities, and needs and to guide targeted public health planning and policy.
