Unemployment Rate in Marin County, CA was 4.00% in February of 2024, according to the United States Federal Reserve. Historically, Unemployment Rate in Marin County, CA reached a record high of 12.20 in April of 2020 and a record low of 1.50 in December of 1999. Trading Economics provides the current actual value, an historical data chart and related indicators for Unemployment Rate in Marin County, CA - last updated from the United States Federal Reserve on May of 2024.