All Counties

Normalized data = COVID-19 cases per 100K county residents (based on 2019 population estimates provided by U.S. Census Bureau QuickFacts)

Alameda

Contra Costa

Marin

Monterey

Napa

San Francisco

San Mateo

Santa Clara

Santa Cruz

Solano

Sonoma

Sources

By Jack J. Lee

Files available on Github

All Counties

• Cases tracked by NBC Bay Area
• Data from the LA Times coronavirus project saved by the Wayback Machine
• Data from the SF Chronicle coronavirus map

Alameda

• Alameda County and the City of Berkeley have separate public health departments
• Alameda County
  • Dashboard
  • COVID-19 page from the Alameda County Public Health Department
  • Past numbers from the Alameda County Public Health Department, saved by the Wayback Machine
  • Press releases by the Alameda County Public Health Department
  • Coronavirus reporting by the Mercury News
  • Last updated using data from July 5, 2020
• City of Berkeley
  • Dashboard
  • COVID-19 page from the Public Health Division
  • Coronavirus news provided by the Public Health Division
  • Reporting by Berkeleyside
  • Last updated using data from July 5, 2020

Contra Costa

• Current numbers from the Contra Costa Health Services
• Past numbers from the Contra Costa Health Services, saved by the Wayback Machine
• Coronavirus reporting by the Mercury News
• Last updated using data from July 5, 2020

Marin

• Coronavirus status updates provided daily by Marin Health and Human Services
• Last updated using data from July 2, 2020

Monterey

• COVID-19 media page maintained by the County of Monterey Health Department (“Daily Situational Report”)
• Last updated using data from July 5, 2020 (numbers labeled as July 4)

Napa

• Coronavirus (COVID-19) updates provided by Napa County
• Situation updates provided by Napa County Public Health
• Last updated using data from July 3, 2020

San Francisco

• Current numbers from the San Francisco Department of Public Health
• Past numbers from the San Francisco Department of Public Health, saved by the Wayback Machine
• Press releases by the San Francisco Department of Public Health
• Last updated using data from July 3, 2020

San Mateo

• Dashboard
• Coronavirus page by San Mateo County Health
• Past numbers from San Mateo County Health, saved by the Wayback Machine
• Last updated using data from July 4 (numbers labeled as July 3)

Santa Clara

• Coronavirus (COVID-19) Data Dashboard from the County of Santa Clara Public Health Department
• Tweets and press releases by the County of Santa Clara Public Health Department
• Coronavirus reporting by the Mercury News
• Last updated using data from July 5, 2020

Santa Cruz

• Coronavirus page maintained by the County of Santa Cruz Health Services Agency
• Previously, numbers on the Health Services Agency page, saved by the Wayback Machine
• Coronavirus reporting by the Santa Cruz Sentinel
• Last updated using data from July 5, 2020

Solano

• Solano County COVID-19 Dashboard
• Last updated using data from July 2, 2020

Sonoma

• Coronavirus Cases Dashboard provided by the County of Sonoma
• Last updated using data from July 3, 2020