Coronavirus Numbers

Reopening Sonoma County

To loosen restrictions on the activities in Sonoma County, we need to meet certain goals set by the state. Both of these numbers, new cases per 100,000 population and test positivity rate need to be inside a certain "Tier" to allow more reopening. The county needs to keep their numbers inside the lower tier for two weeks to open up more activity. For more information, see California's Blueprint for a Safer Economy page.

These numbers are updated every Tuesday when the county reports them to the state and the decision is made if the county should ease or increase restrictions.

Hospital Utilization

While hospital usage isn't an element of the state's decision making process for reopening, it's a closely monitored resource at both the state and county level. The county tracks the number of patients in the hospital with COVID-19 as well as the resources that may be needed to treat a patient surge.

Protecting the Elderly

While the goal is to reduce the prevalance of the virus in the population as a whole, older residents are more at risk of serious complications from COVID-19. The county is monitoring the prevalance of the infection rates in each age democraphic to measure how well the older citizens are being protected.

Sonoma County

Local data provided by Sonoma County showing the number of active cases in the county.

New COVID-19 Cases

One measure of progress is the number of new cases of COVID-19. Unchecked, infections will increase exponentially in the community with the number of newly diagnosed cases being larger each day. As social distancing and other containment measures begin to show results, the number of new cases will flatten out and eventually decline.

COVID-19 Projections

The University of Washington's Institute for Health Metrics and Education has released state-by-state projections of the coronavirus' peak. The California projections show the expected deaths per day in the state along with projected best and worst case scenarios. The second chart shows projected effects in California compared to other large states across the country, followed by the projections normalized by population.


The Press Democrat is using data collected from Sonoma County, Johns Hopkins University, the CDC and the WHO to report, graph and map the progress of the novel coronavirus outbreak locally and around the world. The numbers are updated hourly on this page but may not be updated that frequently at each source.

Sonoma County
United States

COVID-19 Charts

This chart shows the growth of COVID-19 cases in Sonoma County, starting with the first reported case in early March. Hover your cursor over any part of the graph for more information about that date or grouping.

These charts show data from other parts of the country and world for comparison of rates of infection and recovery (Note: state data does not currently include recovered counts)

Bay Area Counties

The coronavirus has affected counties throughout the Bay Area differently with more densely populated counties showing a higher level of infection than others. Infection levels are expressed here in confirmed infections per 1,000 users - a 1% infection level would be described as 10 cases per 1,000 residents.

Bay Area Counties
Casesper 1,000Deaths
Contra Costa
San Francisco
San Mateo
Santa Clara

National Map

This map shows the number of new cases in each county in the United States. Hover over a county for more details. You can zoom in and out using the '+' and '-' buttons at the right and can drag the zoomed map with your cursor.

World Map

This map shows the number of infections for each country around the world. Hover over a country for more details. You can zoom in and out using the '+' and '-' buttons at the right and drag the zoomed map with your cursor. Note: This shows total infections per country so more populous nations are going to show higher numbers for the same level of infection.

Country Comparison

This chart shows the total number of cases diagnosed in each country. The data can be sorted by each column - just click on the column heading to select that metric and click again to reverse the sorting.

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