Unemployment Rate in Alameda County, CA was 4.40% in December of 2025, according to the United States Federal Reserve. Historically, Unemployment Rate in Alameda County, CA reached a record high of 14.10 in April of 2020 and a record low of 2.50 in May of 2018. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Alameda County, CA - last updated from the United States Federal Reserve on April of 2026.