Premature Death Rate for San Mateo County, CA was 254.90000 Rate per 100,000 in January of 2020, according to the United States Federal Reserve. Historically, Premature Death Rate for San Mateo County, CA reached a record high of 282.40000 in January of 1999 and a record low of 220.40000 in January of 2017. Trading Economics provides the current actual value, an historical data chart and related indicators for Premature Death Rate for San Mateo County, CA - last updated from the United States Federal Reserve on May of 2024.