Resident Population in Garfield County, UT was 5.29000 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Garfield County, UT reached a record high of 5.32000 in January of 2023 and a record low of 3.10000 in January of 1972. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Garfield County, UT - last updated from the United States Federal Reserve on April of 2026.