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COVID-19 trends

This page shows data over time on the COVID-19 pandemic in King County, Washington since the beginning of the pandemic.

For up-to-date insights from Public Health – Seattle & King County, visit

Questions based from the Public Health Insider blog (September 13, 2022): COVID-19 data dashboards updated to provide simpler, more intuitive view of King County data. These are some common questions people ask about the new COVID-19 metrics and trends pages, with answers from our lead epidemiologists:

The Current COVID-19 metrics dashboard will continue to show information about COVID-19 cases, hospitalizations, and hospital bed use, but in a simpler format. Beyond the Current COVID-19 metrics dashboard, the COVID-19 trends dashboard, and the About the data and Download the data pages, all other dashboards are remaining the same, and the same county-wide data will continue be available for direct download by the public.

The COVID-19 summary dashboard and COVID-19 community level dashboard will be retired as part of this redesign. The most relevant information about hospitalizations, hospital capacity impacts, and reported case rates will be displayed on the new Current COVID-19 metrics dashboard, and all other data from the older dashboards will continue to be available via direct download.

The 7-day average rate is used to adjust for daily variations, which may be large among smaller populations. It is determined by first calculating the 7-day rate for each day in the past 28 days. Then, the average of the 7-day rates for the past 28 days is taken.

COVID-19 data by city (and other geographies) are available on the Data for download page. COVID-19 data by city is no longer shown on the dashboards because the COVID-19 data dashboards are shifting to emphasize COVID-19 community level, which is measured at the county level.

We have removed this visualization because it does not represent up-to-date data. Statewide estimates for effective reproductive number are available from the Washington State Department of Health.

Return to the COVID-19 data dashboards page or the COVID-19 main page

View the Current COVID-19 metrics page

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Wednesday, January 25, 2023: Washington Dept. of Health and Public Health – Seattle & King County data are still being affected by a security breach encountered by one of Washington's hospital organizations. As a result, cases, testing, and in particular, hospitalizations may be undercounted in October 2022 due to incomplete data. Recent data are more complete starting in early November through this update. We will update this message as the situation evolves and data flow is restored.

Wednesday, January 25, 2023: Recent declines in testing and reported cases may be due to closures for the holiday weekend and should be interpreted with caution.

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Geography Demographics More Information

Overall trend

This figure shows the daily reported cases, hospitalizations, and deaths in King County since the beginning of the COVID-19 pandemic. Use the button below to switch between showing COVID-19 hospitalizations, reported cases, and deaths. Hover your cursor or tap part of the figure to see more details.


This map shows the rate of COVID-19 in each region of King County in weekly increments since the beginning of the COVID-19 pandemic. Use the button below to switch between showing COVID-19 hospitalizations and reported cases. Use the slider to select a date range. Hover your cursor or tap a region to see more details.


These figures show the average 7-day rate of COVID-19 over the past 28 days as well as the 4-month trend. Use the buttons below to switch between showing COVID-19 hospitalizations, reported cases, and deaths and which age group to display. Hover your cursor or tap a part of the figures to see more details.

For outcomes by race and ethnicity, visit the King County Race and Ethnicity Data Dashboard.

More information

About the data: offers information on and insights into how data is collected and how it should be interpreted, along with any limitations and other considerations when using the data for individuals and organizations.

Download the data: offers downloadable Excel files that contain COVID-19 data for King County.

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