Resident Population in Mineral County, MT was 5.09000 Thous. of Persons in January of 2023, according to the United States Federal Reserve. Historically, Resident Population in Mineral County, MT reached a record high of 5.09000 in January of 2023 and a record low of 2.95800 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Mineral County, MT - last updated from the United States Federal Reserve on May of 2024.