The San Diego Country in California had 75 coronavirus cases by March 18 , 2020 .
Los Angeles County increased to 190 , San Mateo increased to 80 , San Diego County increased to 75 , San Francisco increased to 51 , Contra Costa increased to 41 , Alameda County increased to to 31 , Orange County increased to 42 , Riverside County increased to 16 , and San Joaquin County increased to 14 confirmed cases .
2020 coronavirus pandemic in California