Resident Population in Amador County, CA was 42.02600 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Amador County, CA reached a record high of 42.02600 in January of 2024 and a record low of 11.82100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Amador County, CA - last updated from the United States Federal Reserve on April of 2026.