Resident Population in Tuolumne County, CA was 54.20400 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Tuolumne County, CA reached a record high of 56.28000 in January of 2005 and a record low of 22.16900 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Tuolumne County, CA - last updated from the United States Federal Reserve on May of 2024.