Resident Population in Cache County, UT was 142.39300 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Cache County, UT reached a record high of 142.39300 in January of 2023 and a record low of 42.33100 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Cache County, UT - last updated from the United States Federal Reserve on May of 2024.