Resident Population in Duchesne County, UT was 20.47700 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Duchesne County, UT reached a record high of 20.74300 in January of 2015 and a record low of 7.29900 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Duchesne County, UT - last updated from the United States Federal Reserve on May of 2024.