Unemployment Rate in Santa Clara County, CA was 4.10% in January of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Santa Clara County, CA reached a record high of 11.00 in January of 2009 and a record low of 2.50 in January of 2019. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Santa Clara County, CA - last updated from the United States Federal Reserve on April of 2026.