The dataset summarizes the number and rate of cases, tests and positivity at city level over time. Data are summarized as three-week time period.

This dataset is updated every Thursday.

*** The County of Santa Clara Public Health Department discontinued updates to the COVID-19 data tables effective June 30, 2025. The COVID-19 data tables will be removed from the Open Data Portal on December 30, 2025. For current information on COVID-19 in Santa Clara County, please visit the Respiratory Virus Dashboard [sccphd.org/respiratoryvirusdata]. For any questions, please contact phinternet@phd.sccgov.org ***

Cumulative COVID-19 positivity rate among county residents per 100 COVID-19 tests performed by census tract. Source: California Department of Public Health, California Reportable Disease Information Exchange (CalREDIE). Note: Data are not presented if the test count is between 1 to 10 and/or population size is less than 1000 in a census tract.

COVID-19 cumulative positivity rate by census tract is updated the first Tuesday of each month. This table was updated for the last time on January 24, 2023.

The dataset summarizes the number and rate of cases, tests and positivity at zip code level over time. Data are summarized as three-week time period.

This dataset is updated every Thursday.

The dataset provides the total daily number of test for COVID-19 among Santa Clara County residents. Source: California Reportable Disease Information Exchange. Data Notes: A test represents at least one specimen tested per person per day. Some people will have multiple specimens collected and tested during the same visit but are only counted once per day. If a person is tested multiple times on different days then he or she will be counted for each day he or she was tested. The positivity rate is the percent of positive tests out of total tests performed.

This table is updated Monday-Friday and will not be updated on holidays.