Number of Private for All Industries in San Mateo County, CA was 30139.00000 Establishments in July of 2023, according to the United States Federal Reserve. Historically, Number of Private for All Industries in San Mateo County, CA reached a record high of 30139.00000 in October of 2022 and a record low of 16694.00000 in April of 1990. Trading Economics provides the current actual value, an historical data chart and related indicators for Number of Private for All Industries in San Mateo County, CA - last updated from the United States Federal Reserve on May of 2024.