Santa Clara County had less than 190 coronavirus cases by March 19 , 2020 .
Los Angeles County increased to 231 , San Mateo increased to 89 , San Francisco County increased to 70 , Sacramento County increased to 45 , Contra Costa increased to 42 , Alameda County increased to 35 , San Joaquin County increased to 15 , and Santa Cruz County increased to 14 .
2020 coronavirus pandemic in California