Resident Population in San Juan County, CO was 0.80200 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in San Juan County, CO reached a record high of 0.96000 in January of 1983 and a record low of 0.54300 in January of 1998. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in San Juan County, CO - last updated from the United States Federal Reserve on May of 2024.