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King County Washington home

Public Health data

Providing regular, updated data on the health of King County's population is a core function of our work. Data is intended to inform the community, including policy makers, medical personnel, researchers, community-based organizations, government agencies and individuals to understand and respond to diseases, threats and underlying conditions impacting our health.

Population health data

Explore data related to population-level health outcomes and social factors that impact health, including our Community Health Indicators data dashboards.

Communicable disease data

Explore data related to communicable disease surveillance in King County, including the communicable disease and epidemiology annual report.

Reports related to COVID-19 data

Reports on COVID-19 data trends and topics published by Public Health staff.

Population health reports

Reports produced by the Assessment, Policy Development and Evaluation Unit.

A mom standing with her daughter and son
Young people’s mental health and substance use in King County: Learning from the data.
April 29, 2025
Screenshot of a color-coded plotted custom Google map
What pandemic death data reveal about health in King County now.
August 30, 2024
Food bank workers unloading fresh produce from an insulated van
How healthy is King County? Continuing COVID-19 impacts and areas to watch.
March 13, 2024
Ending the HIV Epidemic
Working together to end HIV in King County.
February 21, 2024